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Shock absorber guiding device

A technology of guides and shock absorbers, which is applied in the direction of shock absorbers, springs/shock absorbers, shock absorbers, etc., can solve the problems of powder metallurgy process without improvement, increase costs, etc., achieve good strength and improve service life Effect

Active Publication Date: 2017-12-15
宁波金钟粉末冶金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Publication No. CN101386073 discloses a method for manufacturing a powder metallurgy guide, which increases product density by adding reduced iron powder to the formula. This method not only increases the cost of the product but also does not improve the conventional powder metallurgy process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 6

[0031] Compression molding: Weigh the raw materials according to the components and parts by weight of the shock absorber guide described in Example 1 in Table 1 and mix them uniformly, and press the mixed raw materials at 540 MPa to obtain a guide blank;

[0032] Sintering: put the guide blank into a mesh belt sintering furnace, and sinter it at 1180°C under gas protection to obtain the guide blank; during the sintering process, the sintering is carried out under the protection of hydrogen and nitrogen, and the The volume ratio is 3:1, and the net speed is 100mm / s;

[0033] Secondary pressing: After coating a layer of protective agent on the surface of the guide blank, carry out secondary pressing at 540MPa to obtain a semi-finished guider; the protective agent includes the following components in parts by weight: fluorine oil: 40 parts, hydroxypropyl Methyl cellulose: 15 parts, glycerol: 12 parts, magnesium oxide: 3 parts, silicon oxide: 4 parts, tungsten carbide: 3 parts; ...

Embodiment 7

[0036] Compression molding: Weigh the raw materials according to the components of the shock absorber guide described in Example 2 in Table 1 and their parts by weight and mix them evenly, and press the mixed raw materials at 530 MPa to obtain a guide blank;

[0037] Sintering: put the guide blank into a mesh belt sintering furnace, and sinter it at 1150°C under gas protection to obtain the guide blank; during the sintering process, the sintering is carried out under the protection of hydrogen and nitrogen, and the The volume ratio is 3:1, and the net speed is 110mm / s;

[0038] Secondary pressing: After coating a layer of protective agent on the surface of the guide blank, carry out secondary pressing at 550 MPa to obtain a semi-finished guider; the protective agent includes the following components in parts by weight: fluorine oil: 35 parts, hydroxypropyl Methyl cellulose: 18 parts, glycerol: 11 parts, magnesium oxide: 4 parts, silicon oxide: 2 parts, tungsten carbide: 3 part...

Embodiment 8

[0041] Compression molding: Weigh the raw materials according to the components and parts by weight of the shock absorber guide described in Example 3 in Table 1 and mix them uniformly, and press the mixed raw materials at 550 MPa to obtain a guide blank;

[0042] Sintering: put the guide blank into a mesh belt sintering furnace, and sinter it at 1200°C under gas protection to obtain the guide blank; during the sintering process, the sintering is carried out under the protection of hydrogen and nitrogen, and the The volume ratio is 2:1, and the net speed is 105mm / s;

[0043] Secondary pressing: After coating a layer of protective agent on the surface of the guide blank, carry out secondary pressing at 530MPa to obtain a semi-finished guider; the protective agent includes the following components in parts by weight: fluorine oil: 45 parts, hydroxypropyl Methyl cellulose: 12 parts, glycerol: 14 parts, magnesium oxide: 2 parts, silicon oxide: 4 parts, tungsten carbide 2 parts;

...

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Abstract

The invention relates to a shock absorber guiding device and belongs to the technical field of powder metallurgy. The shock absorber guiding device comprises the following components including, by weight, 1-3 parts of graphite powder, 20-40 parts of copper powder, 3-8 parts of manganese sulfide powder, 1-5 parts of nickel powder, 0.01-0.08 part of Bi2(SO4)3 powder, 1-5 parts of boron carbide, 1-5 parts of zinc stearate and 40-80 parts of iron powder. By means of the shock absorber guiding device, due to the fact that raw materials of the shock absorber guiding device are reasonable matched, a protection agent is sprayed during secondary pressing forming and secondary pressing and shaping is conducted under large pressure, the shock absorber guiding device can have extremely good strength, hardness and wear resistance, the density of the manufactured guiding device is larger than 6.7 g / cm<3>, the surface hardness is larger than 90 HB, the strength is larger than 700 MPa, cleanliness reaches the 8th level, and therefore the service life of the shock absorber guiding device is greatly prolonged.

Description

technical field [0001] The invention relates to a shock absorber guide and belongs to the technical field of powder metallurgy. technical background [0002] Shock absorber (Vibration Damper), the shock absorber is mainly used to suppress the shock when the spring rebounds after absorbing the shock and the impact from the road surface. When passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will reciprocate, and the shock absorber is used to suppress this spring jumping. Shock absorber is too soft, automobile body can hop up and down, shock absorber can bring too great resistance too forcedly, cloggy bedspring works normally. In the process of refitting the suspension system, hard shock absorbers should be matched with hard springs, and the hardness of the springs is closely related to the weight of the car. Therefore, heavier cars generally use harder shock absorbers. The guide is a part of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/00B22F1/00B22F3/16C22C38/16C22C38/08C22C33/02C22C30/02C22C32/00F16F9/32
CPCF16F9/32C22C30/02C22C32/0047C22C32/0089C22C32/0094C22C33/0221C22C33/0228C22C33/0242C22C33/0278C22C38/08C22C38/16B22F3/16B22F5/00B22F2998/10B22F1/10B22F3/02B22F3/1007B22F2003/166
Inventor 蔡健翰张小芬
Owner 宁波金钟粉末冶金有限公司
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