http://www.texsteels.com/Texsteels Industrial Co.,LtdJemsv2016 ReleasedTue, 05 May 2026 10:32:08 GMTservice@admin.comzh-cnhttp://www.texsteels.com//technology_articles_show_68.htmlCasting 3D diagram /2d, customer characteristics requirements and so on.
1, full size test
A full size inspection of the die castings for the first time produced by the new die casting die can effectively avoid the hidden danger of product size problems in the subsequent die casting production, especially the size matching parts with other parts.
A full size inspection is made for every newly manufactured die casting die, ensuring that every size is within the tolerance range, which can effectively avoid similar problems.
2, performance test of die casting
With the continuous expansion of the scope of application of die casting, die casting of various performance requirements are also increasing, the commonly used destructive test, air tightness test, the machine after the (shrinkage) test, performance test was carried out for the first new related production, it is necessary to do;
When the castings can not meet the requirements of these properties, it is necessary to analyze the mold, find the reasons, and solve the problem.
Sometimes the slight change of mold gate will change the filling state of the mold, and the filling state of the mold will affect the structure, compactness and mold exhaust of the product, which will lead to the change of the quality of the die castings produced.]]>Mon, 29 Jan 2018 09:35:05 GMTjasonhttp://www.texsteels.com//industry_news_show_67.htmlIt is the most direct and reliable way to check the working state of die casting die by using die casting mould test sheet.
1. The movement of die part in the process of mold test should be flexible, stable, accurate and reliable, whether there are skew and stagnation.
2, the cooling water road and hydraulic oil road should be unblocked and no leakage.
3, the mold exhaust is good, whether there is splash in the metal liquid;
4. The relative movement of all the fixed parts of the mold;
5, the slider movement should be stable, the slide block and the wedge tight block should be pressed tight, the contact area should not be less than 3/4, the limit position after the die opening should be accurate and reliable.
6. The ejection rod of the mold is no different, the top out of the back position is normal.
7. There is no abnormality in the heel of the punch, and the top out of the product has no abnormality.
8, the opening mould has no crack, deformation, product parts and other phenomena.
9. The result of the preliminary inspection of the size of the product after the mold is preheated;]]>Mon, 29 Jan 2018 09:34:42 GMTjasonhttp://www.texsteels.com//industry_news_show_66.htmlAluminum Alloy for Al Si alloy, Al Cu alloy, Al Mg alloy, alloy AlZn.
1, Al Si alloy
The eutectic Al Si alloy with the crystallization temperature interval and silicon in the alloy phase has great latent heat and high heat capacity, the shrinkage factor is relatively small, so the general casting performance than other Aluminum Alloy good, the filling performance or thermal cracking and shrinkage is relatively small.
2, Al Mg alloy
The performance characteristics of Al Mg alloy: the room temperature mechanical properties; corrosion resistance; casting performance is poor; the fluctuation and wall thickness effect mechanical properties are relatively large; long-term use, is because of the aging effect and the plasticity of the alloy decreases, even casting cracking phenomenon; die casting should be produced tendency of stress corrosion cracking are also larger.
3, AlZn alloy
AlZn alloy casting by natural aging, can obtain high mechanical properties. When the mass fraction of zinc is greater than 10%, the strength increases significantly. The defects of this alloy are poor corrosion resistance, stress corrosion tendency, and hot cracking during die-casting.
4. Die-casting aluminum alloy with special properties
The special properties of die-casting aluminum alloy developed at home and abroad are as follows:
Decorative type: suitable for Al Mn alloy anodizing and coloring, high elongation, corrosion resistance also has considerable. But its strength is not high, the shrinkage rate is large, and it is easy to stick to the mold.
Heat treatment: quenching type AlSiCu alloy after incomplete quenching after artificial aging and artificial aging completely to the maximum hardness.
In addition, Al Mn Zn alloy, wear-resistant hypereutectic Al Si alloy and anti vibration anti vibration Al Zn alloy are also used for surface treatment and heat treatment.
There are also die-casting aluminum alloy composites, which have not been widely produced and applied at present.]]>Mon, 29 Jan 2018 09:34:07 GMTjasonhttp://www.texsteels.com//company_news_show_65.html
1. High quality mold material
2. Reasonable design of die wall thickness and other die sizes
3. Use the insert as much as possible
4, the possible selection of a large R angle under the possible conditions
5. The distance between the cooling water channel and the surface and the corner must be large enough
6. Stress tempering should be removed after rough machining
7. Correct heat treatment, quenching and cooling must be fast enough
8, thoroughly grinding and removing the EDM metamorphic layer
9. Non highly polished surface
10. The mould surface should be treated by oxidation
11. If nitriding, the layer can not be too deep
12. Preheat the mold to the recommended temperature in the correct way
13. The slow speed of the hammerhead should be used for 5~10 pieces of die-casting
14. To minimize the temperature of aluminum liquid on the premise of getting the qualified products
15. No high injection rate of aluminum
16, ensure that the mold is properly cooled, the temperature of the cooling water should be kept at 40~50 C
17, temporary shutdown, the cooling water should be reduced and the cooling water should be reduced to avoid the heat shock of the die when the machine is reopened.
18. When the surface of the model is at the highest temperature, the coolant should be closed
19, but more than the spray demoulding agent
20. Stress tempering after a certain number of die-casting]]>Mon, 29 Jan 2018 09:33:34 GMTjasonhttp://www.texsteels.com//industry_news_show_64.htmlAccording to relevant statistics, last year, the scale of China's mold market reached 223 billion yuan, and the related industry was about 25 trillion. The die casting industry played a huge role in the transformation and upgrading of China's manufacturing industry.
Relevant statistics show that 95% automobile components were completed 90% of the appliance mold development, components completed by the mold development, intelligent mobile phone parts 80% for mold manufacturing, mold support Chinese in addition, communication equipment, aerospace, city rail transportation, medical equipment and other manufacturing industries to achieve rapid growth.
In 2016, China made about 80 million tons of metal products by mold, and the number of metal products processed by CNC machine tools. The whole year, about 75 million tons of plastic products and 6 million tons of rubber products were basically moulds.
The relevant data show that on the basis of the steady development of the Chinese mould industry, the transformation and upgrading will be further accelerated, and the prospect of improving the quality and increasing efficiency can be expected.]]>Mon, 29 Jan 2018 09:33:08 GMTjasonhttp://www.texsteels.com//company_news_show_63.htmlThe characteristic of this casting method is that the product is precise in forming and high in production efficiency.
However, the conventional die casting process is defective. Because the gas in the mold cavity can not be effectively excluded during high-speed injection, it remains in the internal part of the casting, forming porosity defects, resulting in poor mechanical properties of the castings. In order to solve this problem, the vacuum pumping method is adopted, that is to say, the gas in the cavity is drawn out during die casting to form a vacuum or negative pressure state, thus reducing the porosity defect in the casting.
For a long time, in order to widen the application scope of die castings and improve the mechanical properties of die castings, some new die casting methods, such as laminar flow filling method (super low speed die casting method), oxygen filling die casting method and vacuum die casting method, have been studied for a long time.
The main purpose of the above method is to reduce the volume of gas in the filling process of metal liquid and improve the mechanical properties of the castings.
Because laminar flow filling method has many disadvantages, such as low production efficiency, complicated operation process and difficult process parameter control, so there are not many applications of these two methods in actual production. The vacuum die casting rule is to extract the gas in the cavity and fill the cavity in vacuum. So the mechanical properties of the castings are improved.
And the vacuum die casting and the common die-casting method, the operation is convenient, does not reduce the production efficiency. Therefore, the vacuum die casting has shown strong vitality since its emergence. With the development of related technology, its application will be more and more extensive.]]>Mon, 29 Jan 2018 09:32:46 GMTjasonhttp://www.texsteels.com//technology_articles_show_62.html1. purposes
Standardize the management of the daily maintenance of die casting die, reduce the frequency of damage, ensure the smooth and efficient production, ensure the compliance of the product.
2. range
The daily maintenance and maintenance management of all the company's formal die casting dies (New dies have not been accepted and formally transferred to the die casting workshop).
3. duties
3.1 mold one, two level maintenance by the die casting workshop mold maintenance and maintenance team is responsible.
3.2 die-casting workshop leader is responsible for the first class maintenance of die casting die, and with the mold maintenance and maintenance team to complete the two level maintenance.
3.3 the mold maintenance and maintenance group in the die casting workshop is responsible for the establishment of the mold maintenance account and the related records.
3.4 mold three maintenance is responsible for the head of the mold workshop, the mold maintenance team and the related records to fill in.
4. definition
4.1 the first class maintenance of the die casting mold: the working content of the pressure casting mould, such as oil, cleaning, cleaning and so on.
4.2 die casting mold two maintenance: replacement core accessories, core oil cylinder maintenance, mold polishing, runner modification and other work.
4.3 die casting mold three maintenance: mould structure change, product size change, cavity repair and replacement and insert block and other work.
5. work requirements
5.1 management ledger of die casting mould
5.1.1 die casting mould maintenance and maintenance team is responsible for the establishment of "die account", "preparation of mould parts list", a list of each parts should be mould parts drawings (drawings: a new method to obtain the map provided by the mould parts, mold mold principle by the old people can not find the mold shop, mould by mould the maintenance group approved the draft report drawing mold workshop and R & D department). On the account of the die casting mould, the number of die, the coding of the position of the stock, the date of opening, the name of the mould, the mold making person and so on. The die easy parts usually refer to the top rod, the top sleeve, the slide block core pulling, the important core and so on.
5.1.2 die casting mould maintenance and maintenance team is responsible for the establishment of "die maintenance process card", the card marked: mold maintenance responsibility, mold making, mold mold number, name, inventory position encoding, design life, production date, production module, current cumulative module, maintenance records and so on.]]>Mon, 29 Jan 2018 09:31:48 GMTjasonhttp://www.texsteels.com//company_news_show_61.htmlChemical composition test, 1 testing methods of aluminum die-casting mold, inspection standard and inspection must meet GB/T15115 standard. The chemical composition of sample products can be used from die casting to meet the requirements of GB/T15115. The mechanical properties, testing methods, testing times and testing specifications of mechanical properties must meet the requirements of GB/T15115.
2, the sample used in die casting products, cutting the size of components, test style after discussion decision.
3, the geometric style of die casting test and test can be detected through a wide range of samples or by using the standard of GB2828 and GB2829, and the results of test must meet the specifications.
4. The inspection of the appearance quality of the aluminum castings must be tested by one piece. The results of the inspection must meet the requirements of the standard.
5, the roughness of aluminum die-casting mold to perform appearance according to the standard of GB/T6060.1.]]>Mon, 29 Jan 2018 09:31:02 GMTjasonhttp://www.texsteels.com//industry_news_show_60.html1. According to the materials used in the product category, product shape and precision and other indicators of the product process analysis, to order the process.
2, determine the position of the product in the mold cavity, carry out the parting surface, the analysis and design of the overflow system and the pouring system.
3. Design the assembly and fixed mode of the core of each activity.
4, the design of the distance and force of the core pulling.
5. The design of the ejection mechanism.
6. Determine the die casting machine, the mold frame and the cooling system design.
7. Check the related dimensions of the die and die casting machine, draw the technical drawings of the mold and the various parts.
8. The design is completed.]]>Mon, 29 Jan 2018 09:30:31 GMTjasonhttp://www.texsteels.com//industry_news_show_59.htmlFri, 26 Jan 2018 18:01:16 GMTjason