Spur Gear PM Sintered Part

Product Introduction

Product advantages

Qinhuangdao Zhongwei Precision Machine Parts Co., Ltd. was established in 1997, covering an area of 65,000 square meters, with a factory area of 12,000 square meters and a total investment of 7 million yuan. The factory is located at the place where Qinshihuang enters the sea in Hebei Province, and Qinhuangdao has convenient transportation.

Our company is a professional manufacturer of powder metallurgy sintered products. The product materials include: iron-based, iron-copper-based, copper-based and stainless steel. The product structure is: precision oil-impregnated bearings and structural parts, and the products are mainly used in the following industries: household appliances, office machinery, pneumatic tools, electric tools, toys, fishing gear, locks, woodworking machinery, textile machinery, motorcycles, automobiles, mahjong machines, etc.

The company has a group of professionals who have been engaged in powder metallurgy technology and manufacturing for a long time and a complete set of advanced powder metallurgy production equipment. The company regards product quality as its lifeblood, introduces sophisticated testing equipment and quality control personnel, and implements full-staff management to ensure product quality.

Cylindrical gear is an important gear type in mechanical gears, and it is the most common gear style.

When the gear mechanism of cylindrical gear is in meshing transmission, there is a large tangential relative sliding velocity along the tooth length direction, which will cause a large rate of friction wear; on the other hand, the tooth profiles of the two wheels are in a point contact state, and their contact Stress values can be so high that the curved surfaces are compressed prematurely, leading to increased tooth wear. Compared with parallel axis helical gears, the service life and mechanical efficiency of crossed axis helical gear mechanisms are much lower.

The gear mechanism is used to transmit motion and power between two shafts, and is the most widely used transmission mechanism. It achieves the transmission requirements through the meshing of gear teeth. Therefore, compared with mechanical transmissions such as friction wheels and pulleys, its salient features are: stable transmission ratio, reliable operation, high efficiency, long life, applicable diameter, peripheral speed and wide power range.

Cylindrical gear is an important type of gear in mechanical gears, and it is the most common gear style. According to the direction of the gear teeth, cylindrical gears can be divided into spur gears, helical cylindrical gears and herringbone cylindrical gears.

Characteristics and application of cylindrical gear

Features of cylindrical gear mechanism

When the gear mechanism meshes and drives, there is a large tangential relative sliding velocity along the tooth length direction, which will cause large wear; on the other hand, the two wheel tooth profiles are in a point contact state, and the contact stress value will be large .As a result, the q surface is pressed and fed prematurely, which promotes the wear of the gear teeth. The service life and mechanical efficiency of the crossed helical gear mechanism are much lower compared with the flat helical gear.

Applications of spur gears

Due to the above-mentioned characteristics of the cross-axis helical gear mechanism, the mechanism is not suitable for power transmission, that is, it is not suitable for high-speed and heavy-load environments, and is generally only suitable for transmitting motion or changing the direction of motion. The size and direction of the helix angle of the two gears of the cross-axis helical gear mechanism are not necessarily the same, so the center distance, angular speed ratio and relative steering of the two wheels can be adjusted by changing the helix angle A. and the intestine. This makes the gear mechanism have greater flexibility in the transmission geometric relationship, and is easy to meet the motion transmission requirements between any interlaced shafts.

Sintered powder gear series

Accuracy: JIS N8 grade modulus: 0.5, 0.8

Material: SMF5040 equivalent to S45C

Tooth surface processing: sintering Tooth surface hardness: 70-95HRB

main specialty

1. Low cost because there is no machining and material waste is reduced.

2. The sintered product has high precision (JISN8 level). The sintered product has high reliability for devices that require maintaining high precision.

3. Sintered metal is porous and can store lubricating oil.

Sintered gear

The main advantages of powder metallurgy sintered gears are high precision, small tolerance, low noise, good wear resistance, low price, and suitable for mass production.

The performance and part-to-part uniformity of performance of oil pump gears after sintering are also reported.

The effect of superfine nickel powder on the sintering process and performance of driven gear was studied.

Sintered parts refer to sintered products formed from powder and strengthened by sintering. Sintered parts are often characterized by close tolerances and ease of installation.

The material powder mixture also contains lubricants to reduce friction during pressing. The powder mixture is the starting material for making sintered parts. The base powder can be pure iron, low alloy steel, stainless steel or high speed steel. The properties of the final part can be adjusted through the use of additives such as carbon, alloying elements, and machinability enhancers. The powder mix also contains lubricants to reduce friction during compaction.

The most common pressing method is axial pressing in steel or carbide dies. Mechanical presses or hydraulic presses can generate demand pressures of 400-800 MPa. Parts with complex shapes can be pressed under a single-step operation procedure, and the productivity is high, up to 25 parts per minute. After pressing, the part achieves a predetermined shape and density. But that's not its final size or strength.

Metal Injection Molding Process

Detection Systems