Welding Die Cast Aluminum Parts Oem Aluminum Die Casting Parts Resin Mold

Oem Aluminium Mold Die Casting Cast Aluminum Parts Aluminium Casting Parts Aluminium Casting Products

Basic Information

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feature
casting crack
It develops along the grain boundary, often accompanied by segregation. It is a kind of crack formed at a higher temperature. It is easy to appear in alloys with larger volume shrinkage and castings with more complex shapes.
2. Heat treatment cracks
Transgranular cracks are often caused by overheating or overheating during heat treatment. Alloys with large stress and thermal expansion coefficient are often cooled too much. or other metallurgical defects
cause
1. The structural design of the casting is unreasonable, there are sharp corners, and the thickness of the wall changes too much
2. The sand mold (core) has poor concessionality
3. Local overheating of the mold
4. Pouring temperature is too high
5. Premature removal of castings from the mold
6. The heat treatment is overheated or overburned, and the cooling rate is too extreme
Prevention method
1. Improve the structural design of castings, avoid sharp corners, strive for uniform wall thickness and smooth transition
2. Take measures to increase the concession of the sand mold (core)
3. Ensure that all parts of the casting solidify at the same time or sequentially, and improve the design of the gating system
4. Appropriately reduce the pouring temperature
5. Control the mold cooling time.
6. The thermal correction method is used when the casting is deformed.
7. Correctly control the heat treatment temperature and reduce the quenching cooling rate
Problem Due to the loose structure and high porosity of aluminum castings, containing a variety of metal and non-metallic impurities, white spots are prone to appear after the anodized film is dyed, and the quality of the anodized film of aluminum castings is difficult to guarantee. In this regard, relevant experts said that the following methods can be used to avoid this problem: First, the impact method of high voltage and high current density is used. In the early stage of anodization, high voltage and high current impact are adopted, so that the large and small "islands" originally divided by impurities are connected into pieces by high current impact. Second, the casting surface grinding method. Grinding can fill the pores of the casting with the ground aluminum powder, acting as a bridge connecting the "islands" of blocks isolated by impurities. Third, the casting surface shot peening method. Before the shot peening method, the author used the method of knocking with a round-headed hammer. The original intention was to make the gaps blocking the "islands" closed by knocking, so as to achieve the purpose of connecting into pieces, and the result was remarkable. Using these methods can effectively avoid the occurrence of white spots after the anodic oxide film of aluminum castings is dyed, so as to ensure its quality.
Advantages of castings 1. Parts with complex shapes can be produced, especially blanks with complex cavities (such as heating)
2 Wide adaptability, all metal materials commonly used in industry can be cast. A few grams to several hundred tons.
3 Raw materials come from a wide range of sources. Inexpensive. scrap, scrap, chips
4. The shape and size of castings are very close to the parts, reducing the amount of cutting, which is less and no cutting.

Certificates and Honors



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Company Profile

Jiangyin Longkang Metal Products Co., Ltd. is located in Zhouzhuang Town, Jiangyin City - the largest aluminum extrusion profile production base. Covering an area of more than 35,000 square meters with more than 350 employees. We focus on metal customization, special-shaped aluminum profiles, aluminum profiles, aluminum tubes, rail transit series, doors and windows aluminum profiles, heat sinks, CNC processed aluminum profiles, interior decoration series, bending series, etc. We also have precision anodizing and various surface treatments, such as PVC film, wood grain, electrophoresis, powder coating, anodizing, etc. After more than 20 years of development, The company has become a modern aluminum production enterprise with perfect quality management system.

The company has the ability to develop and design molds independently, we can produce any extruded aluminum profiles according to your mechanical drawing or sample. Longkang has 10 extrusion production lines (600-3500 tons), one automatic oxidation electrophoresis production line, vertical and horizontal spraying production line per each, and a variety of advanced supporting production, processing and testing equipments. There are also CNT digital control drilling and milling machine(CNC), double head saw, hydraulic saw and punching machine in our processing workshop. The complete technological process can benefit to reduce the production turnover times for semi-finished products, to avoid the damage during transportation, improve the production efficiency, reduce the cost of production,and to ensure the quality and delivery time.

Efficiently treating our customers as partners with sincerity, specialization and satisfaction is our managerial principle. Attributed to the backup of a dedicated technical team, filled with wide and profound knowledge and practice in aluminum profile and world trade for 20 years, the company owns rich experience in product quality control and profile physical properties such as Hardness, Stretchability, Flatness, Straightness, and Tolerance etc. In line with the principle of sharing the preferential cost and joint development, the company has formed an interest community for years with its customers at home and abroad. Sincerely to build up a pleasant mutual trust, cooperative, win-win and value-added sustainable partnership is what we are achieving to grow together with you!

FAQ
Q: How long can I receive the goods after placing the order?
A: 15-30 working days after receiving the deposit (depending on the quantity).

Q: What is the thickness of the anodizing? Can you do 12um?
A: Our normal thickness is about 10 um. Yes, we can do 15 microns and above.

Q: What colors can powder coatings be used for? The thickness of the powder coat?
A: We can do any color for powder coating as long as you can provide color samples. Our usual powder coating thickness is 60-80um.

Jiangyin Longkang Metal Products Co., Ltd. is the holding company of Wuxi High Mountain Hi-Tech Development Co., Ltd. It is located in Zhouzhuang Town, Jiangyin City - the largest aluminum extrusion profile production base. Covering an area of more than 35,000 square meters with more than 350 employees. We focus on metal customization, special-shaped aluminum profiles, aluminum profiles, aluminum tubes, rail transit series, doors and windows aluminum profiles, heat sinks, CNC processed aluminum profiles, interior decoration series, bending series, etc. We also have precision anodizing and various surface treatments, such as PVC film, wood grain, electrophoresis, powder coating, anodizing, etc. After more than 20 years of development, The company has become a modern aluminum production enterprise with perfect quality management system.

The company has the ability to develop and design molds independently, we can produce any extruded aluminum profiles according to your mechanical drawing or sample. Longkang has 10 extrusion production lines (600-3500 tons), one automatic oxidation electrophoresis production line, vertical and horizontal spraying production line per each, and a variety of advanced supporting production, processing and testing equipments. There are also CNT digital control drilling and milling machine(CNC), double head saw, hydraulic saw and punching machine in our processing workshop. The complete technological process can benefit to reduce the production turnover times for semi-finished products, to avoid the damage during transportation, improve the production efficiency, reduce the cost of production,and to ensure the quality and delivery time.

Efficiently treating our customers as partners with sincerity, specialization and satisfaction is our managerial principle. Attributed to the backup of a dedicated technical team, filled with wide and profound knowledge and practice in aluminum profile and world trade for 20 years, the company owns rich experience in product quality control and profile physical properties such as Hardness, Stretchability, Flatness, Straightness, and Tolerance etc. In line with the principle of sharing the preferential cost and joint development, the company has formed an interest community for years with its customers at home and abroad. Sincerely to build up a pleasant mutual trust, cooperative, win-win and value-added sustainable partnership is what we are achieving to grow together with you!