Powder metallurgy process is a process in which metal powder is used as raw material to manufacture finished products and metal materials by pressing forming, sintering and post-processing.

Compared with other processes such as casting and machining, powder metallurgy has the following advantages:
• The parts produced are close to the final size and the material utilization rate is up to 95%;
• High dimensional accuracy, can be processed less or no processing;
• Good at complex or unique shape parts molding.

Due to the advantages of powder metallurgy technology, it has become the key to solve the problem of new materials, plays a pivotal role in the development of new materials, has been widely used in automotive, machinery, electronics, aerospace and other fields, the market demand is great. Powder metallurgy press, as the key equipment of pressing and forming in powder metallurgy production process, has a broad market space.

For example, as we all know, the engine is the “heart” of the car, and its performance is directly related to the power and fuel efficiency of the car. Powder metallurgy plays an important role in the manufacture of automobile engines. Powder metallurgy technology can produce high strength, high wear resistance, high temperature oxidation resistance parts, such as crankshaft, connecting rod, camshaft and so on. Compared to traditional casting and machining processes, powder metallurgy technology can produce more precise parts and improve engine performance and reliability.

With the development of powder metallurgy press towards large tonnage, precision and intelligence, it is necessary to replace the original hydraulic cylinder system with “heavy duty ball screw + servo motor”, which requires the ball screw to meet the needs of high bearing, high precision, multi-drive synchronization and compact size.

Huichuan Precision Machinery has developed high-precision heavy-duty ball screws for powder presses, which have been successfully verified in multiple clients.

Huichuan Precision Machinery realizes many characteristics of high-precision heavy-duty lead screw through unique high-load groove design, helix tangential back structure design, heavy-duty thread processing technology (special equipment for development) and precision grinding technology.

01High precision, 0 gap

Using high-precision grinding process, the nut matching gap is controlled within 0.005mm, the lead accuracy and prepressure consistency of the multi-axis drive screw pair are improved, and the flatness of the pressed product after sintering can reach 0.02mm, without grinding and machining, and the production cost of the pressed product is reduced by more than 15%.

02High speed, low noise

With the helical tangential redirection structure, DN value is increased from 90,000 to 140,000 and the limit speed is increased by 55%. The whole series adopts the ball retainer structure, no direct contact between the steel balls, effectively reduce the running noise;

03High seal

The use of copying seal, fat locking capacity increased by 60%, maintenance frequency reduced by 50%;

04underpower

Developed a new series of small lead heavy duty products; Reduce the motor power while meeting the load.

The launch of the product will promote the model of the powder press industry to the direction of full-electrochemical, high-precision no-grinding of large tonnage models, and greatly improve production efficiency and pressing quality.