Its design requirements are high because it is directly related to the life, cost and product quality of the mold, so it is very important. In addition, it is necessary to consider various factors affecting plastic products, such as mold manufacturing, mold wear and so on. First of all, it is the parting surface of the plastic mold, that is, the contact surface of the die and the punch when the mold is opened and closed.
Plastic molds and plastic processing are inextricably linked.Structural elements that plastic molds should consider during the design processPlastic molds should be considered auto mold https://www.haohaomould.com/product/auto-mould/ in the design process.. Finally, it is also considered from the aspects of the gating system. In particular, the selected part of the gate location should be judged. This positioning system is directly related to the appearance quality of plastic products, so designers need to design a reasonable and easy to adjust positioning method. Again, it is necessary to pay attention to the accuracy of the mold, that is, to fine-tune and avoid the card.
Secondly, it is considered to be a structural member, which refers to a relatively complex mold such as a slider, a slanted top and a straight top block. The design effect and quality of plastic molds directly determine the success or failure of plastic processing, and the correct plastic product design It is the basis of plastic mold design, so in order to obtain high-quality plastic products, many structural factors should be considered in the design of plastic molds
Plastic molds and plastic processing are inextricably linked.Structural elements that plastic molds should consider during the design processPlastic molds should be considered auto mold https://www.haohaomould.com/product/auto-mould/ in the design process.. Finally, it is also considered from the aspects of the gating system. In particular, the selected part of the gate location should be judged. This positioning system is directly related to the appearance quality of plastic products, so designers need to design a reasonable and easy to adjust positioning method. Again, it is necessary to pay attention to the accuracy of the mold, that is, to fine-tune and avoid the card.
Secondly, it is considered to be a structural member, which refers to a relatively complex mold such as a slider, a slanted top and a straight top block. The design effect and quality of plastic molds directly determine the success or failure of plastic processing, and the correct plastic product design It is the basis of plastic mold design, so in order to obtain high-quality plastic products, many structural factors should be considered in the design of plastic molds
Overall evaluation of customers: delivery time is basically timely, quality can meet customer requirements, other services are better, mold after-sales problems are handled in time, the quality department of the company strictly controls the quality, ensuring no quality problems throughout the year, the company’s business philosophy: the company implements five The concept of quality concept, cost concept, time concept, efficiency concept and reputation concept is the necessary operation standard for each staff member, and it is also the only way for the company to develop sustainablely.
The company has more than 20 senior engineers.Shenzhen Mould Factory Hengxingchang’s first-class quality service meets customer requirements
Reference: Mould Company Hengxing Chang Mould has an existing plant area of more than 10,000 square meters, and has a variety of imported equipment, including one high-speed copying machine imported from the UK, three high-precision CNC machining centers, and imported CNC machining center. The injection molding workshops include Hong Washing machine mould Manufacturers https://www.haohaomould.com/product/air-cooler-mould/washing-machine-mould.html Kong Dahua, Toshiba and HVSKY in Canada. At the same time, there are precision measuring instruments such as projectors and coordinate measuring instruments to meet the requirements of mold precision.
Source: Hengxingchang Mould. The trust of new and old customers. 10 sets of sparks, 10 high-power EDM precision mirror sparks, 8 wire cutting machines, 25 trampolines, and other supporting molding equipment. Over the years, the company has won the technology, equipment, service and delivery on time. 25 sets of various types of injection molding machines manufactured by world-class companies
The company has more than 20 senior engineers.Shenzhen Mould Factory Hengxingchang’s first-class quality service meets customer requirements
Reference: Mould Company Hengxing Chang Mould has an existing plant area of more than 10,000 square meters, and has a variety of imported equipment, including one high-speed copying machine imported from the UK, three high-precision CNC machining centers, and imported CNC machining center. The injection molding workshops include Hong Washing machine mould Manufacturers https://www.haohaomould.com/product/air-cooler-mould/washing-machine-mould.html Kong Dahua, Toshiba and HVSKY in Canada. At the same time, there are precision measuring instruments such as projectors and coordinate measuring instruments to meet the requirements of mold precision.
Source: Hengxingchang Mould. The trust of new and old customers. 10 sets of sparks, 10 high-power EDM precision mirror sparks, 8 wire cutting machines, 25 trampolines, and other supporting molding equipment. Over the years, the company has won the technology, equipment, service and delivery on time. 25 sets of various types of injection molding machines manufactured by world-class companies
Do mold maintenance and improve mold life
Do a good job in mold maintenance and improve the life of the mold. The better the mold maintenance, the longer pallet molding factory https://www.haohaomould.com/product/pallet-mould/ the mold life. As a professional injection mold manufacturer, it is recommended that customers do the following aspects of mold maintenance work: 1 daily maintenance of injection molds, Maintenance of various moving parts of the mold, such as thimbles, row positions, guide columns, guide sleeves, etc., often add lubricating oil, and clean the mold surface, the cooling water channel, and so on. 2. Regular maintenance of injection molds, including daily maintenance, cleaning the exhaust sump, trapping the black parts and exhausting, and repairing the damage and wear parts. 3. Do the appearance maintenance of the mold, and paint the outside of the mold to avoid rust. After the mold is molded, the fixed mold and the movable mold should be coated with anti-rust oil. The mold should be closed tightly when it is stored to prevent dust from entering the cavity. The maintenance of the mold is persevering and it is a long-term work.
Do a good job in mold maintenance and improve the life of the mold. The better the mold maintenance, the longer pallet molding factory https://www.haohaomould.com/product/pallet-mould/ the mold life. As a professional injection mold manufacturer, it is recommended that customers do the following aspects of mold maintenance work: 1 daily maintenance of injection molds, Maintenance of various moving parts of the mold, such as thimbles, row positions, guide columns, guide sleeves, etc., often add lubricating oil, and clean the mold surface, the cooling water channel, and so on. 2. Regular maintenance of injection molds, including daily maintenance, cleaning the exhaust sump, trapping the black parts and exhausting, and repairing the damage and wear parts. 3. Do the appearance maintenance of the mold, and paint the outside of the mold to avoid rust. After the mold is molded, the fixed mold and the movable mold should be coated with anti-rust oil. The mold should be closed tightly when it is stored to prevent dust from entering the cavity. The maintenance of the mold is persevering and it is a long-term work.
With the transformation of China’s mold transformation and the continuous changes in industrial innovation, the market prospects of various branches of the industry are gradually becoming clear. The mold industry started late, but with the gradual transformation, new opportunities for the industry have emerged. China imports nearly $1 billion a year in molds, mostly precision, large, complex, and long-life molds. With the transformation of China’s CNC molds and the continuous changes in industrial innovation, the market prospects of various branches in the industry are gradually becoming clear. It is reported that the Chinese market currently has a large demand for medium and high-grade molds, especially in the home appliance, automobile and plastic products industries. It is understood that during the ’Twelfth Five-Year’ period, the overall trend of the mold market is stable and upward, but domestic molds must meet the needs of users in terms of quality and delivery time.
Although China’s mold industry has been a low-end product for a long time, it started late, but with the gradual transformation, new opportunities for the industry have emerged. The mold industry is moving toward technological innovation, and technological upgrading is necessary. This is the most important condition for the rapid development of the industry and market demand. In the international market, industrialized countries are shifting to developing countries, especially Southeast Asian countries, due to increased labor costs. Its country is mainly engaged in the production of high-precision molds, and CNC molds with large labor input are relied on imports. Therefore, the potential of the medium and low-end molds in the international market is enormous. As long as the quality of China’s molds can be improved, the delivery time can be guaranteed, and the prospect of mold export is very optimistic. The demand for mold standard parts is also large, but China currently has only a small amount of exports. In recent years, China has imported nearly one billion US dollars of mold per year, most of which are precision, large, complex and long-life molds. From the perspective of reducing imports, the proportion of such high-end molds and hardware tools in the market will gradually increase.
In the future, China’s mold and CNC tool industry will also rank among the best in the world. From the perspective of the auto molding factory development trend of machinery manufacturing https://www.haohaomould.com/product/auto-mould/ technology, the proportion of high-efficiency beds in Chinese factories will increase year by year, and the demand for high-efficiency and advanced tools will increase rapidly. In addition, due to the increase in labor costs, the price advantage of medium and low-end molds will gradually be lost. For the current situation that the demand for advanced molds for beds is increasing, China’s tool industry must change its concept, vigorously develop the production of high-efficiency and advanced tools, pay attention to sales, and pay more attention to after-sales service, and strive to innovate to occupy more market share. Seize new opportunities and strive to capture more market share.
Although China’s mold industry has been a low-end product for a long time, it started late, but with the gradual transformation, new opportunities for the industry have emerged. The mold industry is moving toward technological innovation, and technological upgrading is necessary. This is the most important condition for the rapid development of the industry and market demand. In the international market, industrialized countries are shifting to developing countries, especially Southeast Asian countries, due to increased labor costs. Its country is mainly engaged in the production of high-precision molds, and CNC molds with large labor input are relied on imports. Therefore, the potential of the medium and low-end molds in the international market is enormous. As long as the quality of China’s molds can be improved, the delivery time can be guaranteed, and the prospect of mold export is very optimistic. The demand for mold standard parts is also large, but China currently has only a small amount of exports. In recent years, China has imported nearly one billion US dollars of mold per year, most of which are precision, large, complex and long-life molds. From the perspective of reducing imports, the proportion of such high-end molds and hardware tools in the market will gradually increase.
In the future, China’s mold and CNC tool industry will also rank among the best in the world. From the perspective of the auto molding factory development trend of machinery manufacturing https://www.haohaomould.com/product/auto-mould/ technology, the proportion of high-efficiency beds in Chinese factories will increase year by year, and the demand for high-efficiency and advanced tools will increase rapidly. In addition, due to the increase in labor costs, the price advantage of medium and low-end molds will gradually be lost. For the current situation that the demand for advanced molds for beds is increasing, China’s tool industry must change its concept, vigorously develop the production of high-efficiency and advanced tools, pay attention to sales, and pay more attention to after-sales service, and strive to innovate to occupy more market share. Seize new opportunities and strive to capture more market share.
The heated plastic is injected into the mold, the last part must be discharged before cooling, and the part is removed from the mold, and part of it will affect the partial cooling, and must be considered how to design.
So, what are the two key points of the injection mold cold considering cooling? First, how long does it take to cool? Second, how the plastic will shrink, affecting the accuracy and consistency of the partial cooling. Injection mold manufacturer recommends: use a mold https://www.haohaomould.com/ with a uniform wall thickness around the entire design. It is more likely to maintain ’0.15’ or ’0.2’ between the walls, but this is not sensible.
The mold is usually a solid shape, and because of the cooling problem, it is hollow to redesign it to improve cooling, and sometimes this may require two hollow portions.
So, what are the two key points of the injection mold cold considering cooling? First, how long does it take to cool? Second, how the plastic will shrink, affecting the accuracy and consistency of the partial cooling. Injection mold manufacturer recommends: use a mold https://www.haohaomould.com/ with a uniform wall thickness around the entire design. It is more likely to maintain ’0.15’ or ’0.2’ between the walls, but this is not sensible.
The mold is usually a solid shape, and because of the cooling problem, it is hollow to redesign it to improve cooling, and sometimes this may require two hollow portions.
What is the effect of the mold material on the heat treatment deformation? The influence of the material on the heat treatment deformation, including the chemical composition of the steel and the original structure. From the material itself, the heat treatment deformation is mainly affected by the influence of the composition on the hardenability, the Ms point, and the like. When the carbon tool steel is subjected to water-oil two-liquid quenching at normal quenching temperature, it generates a large thermal stress above the Ms point;
when it is cooled below the Ms point, the austenite transforms to martensite and generates tissue stress, but Since the carbon tool steel has poor hardenability, the value of the tissue stress is not large. In addition, the Ms point is not high. When the martensite structure changes, the plasticity of the steel is already poor, and plastic deformation is not easy. Therefore, the deformation characteristics caused by the thermal stress are retained, and the mold cavity tends to shrink. However, if the quenching temperature is increased (\u0026gt;850 °C), it may also be due to the fact that the tissue stress plays a leading role, and the cavity tends to swell. For some high-alloy steels, such as Cr12MoV steel, due to its high carbon and alloying elements, the Ms point is lower, so there is more retained austenite after quenching, which has basket moulding https://www.haohaomould.com/product/chair-box-basket-container-mould/ a volume expansion due to martensite. Offset, therefore, the deformation after quenching is quite small, generally when air quenching, air cooling, nitrate bath quenching, the mold cavity tends to slightly expand; if the quenching temperature is too high, the amount of retained austenite increases, type The cavity may also shrink. The original structure of the steel also has a certain influence on the quenching deformation.
The term ’original structure of steel’ as used herein includes the grade of inclusions in steel, the level of banded structure, the degree of segregation of components, the directionality of free carbide distribution, and the like, as well as the different tissues obtained by different preheat treatments ( Such as pearlite, tempered sorbite, tempered troostite, etc.). For die steel, the main considerations are carbide segregation, carbide shape and distribution.
when it is cooled below the Ms point, the austenite transforms to martensite and generates tissue stress, but Since the carbon tool steel has poor hardenability, the value of the tissue stress is not large. In addition, the Ms point is not high. When the martensite structure changes, the plasticity of the steel is already poor, and plastic deformation is not easy. Therefore, the deformation characteristics caused by the thermal stress are retained, and the mold cavity tends to shrink. However, if the quenching temperature is increased (\u0026gt;850 °C), it may also be due to the fact that the tissue stress plays a leading role, and the cavity tends to swell. For some high-alloy steels, such as Cr12MoV steel, due to its high carbon and alloying elements, the Ms point is lower, so there is more retained austenite after quenching, which has basket moulding https://www.haohaomould.com/product/chair-box-basket-container-mould/ a volume expansion due to martensite. Offset, therefore, the deformation after quenching is quite small, generally when air quenching, air cooling, nitrate bath quenching, the mold cavity tends to slightly expand; if the quenching temperature is too high, the amount of retained austenite increases, type The cavity may also shrink. The original structure of the steel also has a certain influence on the quenching deformation.
The term ’original structure of steel’ as used herein includes the grade of inclusions in steel, the level of banded structure, the degree of segregation of components, the directionality of free carbide distribution, and the like, as well as the different tissues obtained by different preheat treatments ( Such as pearlite, tempered sorbite, tempered troostite, etc.). For die steel, the main considerations are carbide segregation, carbide shape and distribution.
How to find a strong injection mold manufacturer In the industry, people know that the competition in the injection mold industry is also very fierce, there are many manufacturers in the market. As a consumer, as a consumer enterprise user, I hope that I can find a strong manufacturer. Why is this? Because a manufacturer has the strength, the products it produces will be more guaranteed in terms of product quality and reputation. So, the question comes, how do we find a strong manufacturer? Below, Jincheng Mould plastic injection moulding https://www.haohaomould.com/ Company will come to support you. The first thing to look at is the size of the business.
Many people do not pay attention to the problem of the size of the enterprise. They think that the scale is not necessarily good. In fact, this is a wrong idea. The size of a company can represent the strength of a company to a certain extent. In terms of enterprise scale, it includes a lot of content, including floor space, plant scale and so on. Only large-scale manufacturers are likely to produce injection molds of good quality and excellent reputation. Imagine that if it is a small family workshop, it will not be able to have a strong production capacity, and there will be a lack of production equipment and production processes. The quality of its products is certainly not comparable to that produced by large-scale enterprises. Secondly, we still have to look at the strong production capacity of the manufacturers. Some friends may have to ask, how to judge the production capacity of a manufacturer? In fact, it is very simple.
In addition to the size of the company, we still have to look at the production equipment of the company. The production capacity of enterprises with advanced production equipment must be strong, and those whose production equipment is backward are not guaranteed. Therefore, we say that it is important to find a manufacturer of injection molds with production strength, and it is necessary to look at how the production capacity is.
Many people do not pay attention to the problem of the size of the enterprise. They think that the scale is not necessarily good. In fact, this is a wrong idea. The size of a company can represent the strength of a company to a certain extent. In terms of enterprise scale, it includes a lot of content, including floor space, plant scale and so on. Only large-scale manufacturers are likely to produce injection molds of good quality and excellent reputation. Imagine that if it is a small family workshop, it will not be able to have a strong production capacity, and there will be a lack of production equipment and production processes. The quality of its products is certainly not comparable to that produced by large-scale enterprises. Secondly, we still have to look at the strong production capacity of the manufacturers. Some friends may have to ask, how to judge the production capacity of a manufacturer? In fact, it is very simple.
In addition to the size of the company, we still have to look at the production equipment of the company. The production capacity of enterprises with advanced production equipment must be strong, and those whose production equipment is backward are not guaranteed. Therefore, we say that it is important to find a manufacturer of injection molds with production strength, and it is necessary to look at how the production capacity is.
Plastic mold hot runner installation precautions 1. Place the mold, lay the upper mold, use the air gun to clean all the holes and the template. 2. Check the size of each hole and focus on the depth. Clear the glitch on the template. Also check the screw holes of the lock manifold and whether the center nail and the anti-rotation hole are finished. 3. Sweep the red hot seal sealing position and the upper step position with the mold. 4. Test the hot nozzle, then remove it and check if the sealant is rubbed to red Dan. If the step is touching the mold.
If not, injection moulding manufacturers https://www.haohaomould.com/ stop the installation and check the cause of the error to adjust. Make sure that the fit is tight and not leaking. Be careful not to bump the tip of the nozzle during this process. 5. Install the hot nozzles at the same time, and install the center pad, center pin, anti-rotation pin. And sweep the red on its plane. 6. Check the height of the nozzle plane and the center pad, and the error is controlled within 0.05mm. 7.
Trial installation of the manifold. Be careful not to miss the hot nozzle seal when the manifold is officially installed. 8. Check the cooperation between the manifold and the hot nozzle to ensure that all the red dans are encountered, and that the glue is not leaked. 9. Finish the hot nozzle to make the tidy and beautiful, and number each group in sequence. Plug the cable into the plug. 10. Formally install the manifold, lock the manifold fixing screws (be sure to lock the balance, keep the four corners of the manifold consistent), control the manifold to be higher than the surrounding frame plane 0.10-0.15mm, and then the manifold The red dan was swept on the meson. 11. Test the code template and check if the plane touches the meson red, and ensure that the template presses the manifold meson. 12. Lock the mold, raise the mold, and check whether the matching between the gate and the tip of the nozzle meets the requirements from the parting surface. To make the tip of the nozzle 0.1-0.2mm lower than the gate surface, the tip of the nozzle cannot be eccentric. Use a multimeter to carefully test each group of circuits so that there are no short circuits, open circuits, leakages, etc., and the lines of each group are correct, ensuring that all circuits are normal. Connect the thermostat to test the heating. The first heating should be kept for 10 minutes within 100 degrees for preheating and dehumidification to protect the heater. Then warm up to the required temperature, if normal, you can arrange the lifting mold test.
If not, injection moulding manufacturers https://www.haohaomould.com/ stop the installation and check the cause of the error to adjust. Make sure that the fit is tight and not leaking. Be careful not to bump the tip of the nozzle during this process. 5. Install the hot nozzles at the same time, and install the center pad, center pin, anti-rotation pin. And sweep the red on its plane. 6. Check the height of the nozzle plane and the center pad, and the error is controlled within 0.05mm. 7.
Trial installation of the manifold. Be careful not to miss the hot nozzle seal when the manifold is officially installed. 8. Check the cooperation between the manifold and the hot nozzle to ensure that all the red dans are encountered, and that the glue is not leaked. 9. Finish the hot nozzle to make the tidy and beautiful, and number each group in sequence. Plug the cable into the plug. 10. Formally install the manifold, lock the manifold fixing screws (be sure to lock the balance, keep the four corners of the manifold consistent), control the manifold to be higher than the surrounding frame plane 0.10-0.15mm, and then the manifold The red dan was swept on the meson. 11. Test the code template and check if the plane touches the meson red, and ensure that the template presses the manifold meson. 12. Lock the mold, raise the mold, and check whether the matching between the gate and the tip of the nozzle meets the requirements from the parting surface. To make the tip of the nozzle 0.1-0.2mm lower than the gate surface, the tip of the nozzle cannot be eccentric. Use a multimeter to carefully test each group of circuits so that there are no short circuits, open circuits, leakages, etc., and the lines of each group are correct, ensuring that all circuits are normal. Connect the thermostat to test the heating. The first heating should be kept for 10 minutes within 100 degrees for preheating and dehumidification to protect the heater. Then warm up to the required temperature, if normal, you can arrange the lifting mold test.
At present, the European mold industry has increasingly felt the impact and pressure from its Chinese counterparts. It is expected that by 2018, China will become one of the largest mold manufacturing bases in the world. Professor Alexandria of the Aachen University of Technology in Germany recently expressed such a sigh when he visited the mold manufacturing base in Ninghai.
According to relevant research departments, the time for mold design and production in Europe is 44% and 61% faster than that of China, but the cost of mold design and production in China is only 91% of that of European counterparts, because China’s labor costs are low, Some foreign customers have a strong appeal. In the past few years, 58% of the world’s molds were produced by Western European countries such as Germany. The proportion basket moulding of Asian countries such as China only accounted for 1%, but in the future, molds in Eastern European countries will have a large increase, while the production ratio of Asian countries will be Increase to about 22%. Given the advantages of China’s cheap labor costs and the good momentum of sustained and rapid economic development, the prospects for China’s mold development will be very broad. ’But this does not mean that everything in China’s development is so ideal and perfect.’ Alexandra believes that because China’s market is prematurely caught in the misunderstanding of price wars, it lacks the ability to innovate independently and has not been established accordingly.
Integrity and reliable market system, especially 65% of European customers feel that the price of Chinese molds is low but the quality is not good. An ideal solution is to strengthen the cooperation between China and the EU, and to place orders and drawings from European countries. The Chinese mold companies are specifically responsible for completing the design and processing, and in the process, they continue to learn European advanced technology and management concepts and accelerate Industrial transformation, efforts to improve the company’s own core strengths and competitiveness. For example, in terms of improving customer satisfaction, companies are not only making a fuss about low prices, but also more importantly, requiring short delivery times, good product quality, and high integrity. Let them know as much as possible about product development, design and production. Process companies must clarify their main direction, strengthen mutual cooperation, and respond to customer needs in a timely and effective manner.
Mold polishing technology polishing process
2019年12月19日The process of polishing the mold polishing technology The last article briefly introduced the mold polishing technology, and then asked everyone to introduce the process. First, rough throwing: Finished milling, EDM, grinding and other processes can be polished on a rotating surface finisher with a speed of 35,000 to 40,000 r/min.
Then there is a manual oil stone grinding, strip of oil stone plus kerosene as a lubricant or coolant. The order of use is 180 SMC mould . Second, semi-fine polishing: semi-fine polishing mainly uses sandpaper and kerosene. The number of sandpaper is: 400#→600#→800#→1000#→1200#→1500#. In fact, #1500 sandpaper only uses mold steel suitable for hardening (above 52HRC), and is not suitable for pre-hardened steel, # because it may cause damage to the surface of pre-hardened steel and cannot achieve the desired polishing effect. Third, fine polishing: fine polishing mainly uses diamond abrasive paste. If the polishing powder is mixed with a diamond abrasive powder or a polishing paste, the usual polishing order is 9 μm (1800#) → 6 μm (3000#) → 3 μm (8000#). The 9μm diamond paste and polishing cloth wheel can be used to remove the hair marks left by the 1200# and 1500# sandpaper. Then, polishing was carried out with a felt felt and a diamond abrasive paste in the order of 1 μm (14000#) → 1/2 μm (60000#) → 1/4 μm (100000#).
Fourth, the polishing working environment: the polishing process should be completed separately at two working places, that is, the rough grinding processing location and the fine polishing processing location are separated, and attention should be paid to cleaning the sand grains remaining on the surface of the workpiece in the previous process. Generally, after rough polishing with oil stone to 1200# sandpaper, the workpiece needs to be polished to clean without dust, ensuring that no dust particles in the air adhere to the mold surface. A polishing process with an accuracy requirement of 1 μm or more (including 1 μm) can be performed in a clean polishing chamber. For more precise polishing, it must be in an absolutely clean space, as dust, smoke, dandruff and water droplets can scrap high-precision polished surfaces. After the polishing process is completed, the surface of the workpiece should be protected from dust. When the polishing process is stopped, all abrasives and lubricants should be carefully removed to ensure that the surface of the workpiece is clean, and then a layer of mold anti-rust coating should be sprayed on the surface of the workpiece.
https://www.haohaomould.com/product/cable-tie-mould-smc-mould/
Then there is a manual oil stone grinding, strip of oil stone plus kerosene as a lubricant or coolant. The order of use is 180 SMC mould . Second, semi-fine polishing: semi-fine polishing mainly uses sandpaper and kerosene. The number of sandpaper is: 400#→600#→800#→1000#→1200#→1500#. In fact, #1500 sandpaper only uses mold steel suitable for hardening (above 52HRC), and is not suitable for pre-hardened steel, # because it may cause damage to the surface of pre-hardened steel and cannot achieve the desired polishing effect. Third, fine polishing: fine polishing mainly uses diamond abrasive paste. If the polishing powder is mixed with a diamond abrasive powder or a polishing paste, the usual polishing order is 9 μm (1800#) → 6 μm (3000#) → 3 μm (8000#). The 9μm diamond paste and polishing cloth wheel can be used to remove the hair marks left by the 1200# and 1500# sandpaper. Then, polishing was carried out with a felt felt and a diamond abrasive paste in the order of 1 μm (14000#) → 1/2 μm (60000#) → 1/4 μm (100000#).
Fourth, the polishing working environment: the polishing process should be completed separately at two working places, that is, the rough grinding processing location and the fine polishing processing location are separated, and attention should be paid to cleaning the sand grains remaining on the surface of the workpiece in the previous process. Generally, after rough polishing with oil stone to 1200# sandpaper, the workpiece needs to be polished to clean without dust, ensuring that no dust particles in the air adhere to the mold surface. A polishing process with an accuracy requirement of 1 μm or more (including 1 μm) can be performed in a clean polishing chamber. For more precise polishing, it must be in an absolutely clean space, as dust, smoke, dandruff and water droplets can scrap high-precision polished surfaces. After the polishing process is completed, the surface of the workpiece should be protected from dust. When the polishing process is stopped, all abrasives and lubricants should be carefully removed to ensure that the surface of the workpiece is clean, and then a layer of mold anti-rust coating should be sprayed on the surface of the workpiece.
https://www.haohaomould.com/product/cable-tie-mould-smc-mould/
