High strength self-lubricating iron-copper powder composite material and preparation method thereof

A technology of iron-copper powder and composite materials, which is applied in the direction of lubricating compositions, additives, petroleum industry, etc., can solve the problems of low tensile strength and hardness, and achieve the effects of improving mechanical properties, increasing relative density, and good self-lubricating properties

Active Publication Date: 2010-10-06
合肥波林新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the current "sintered tin bronze structural material JB / T9139-1999" in my country has low tensile strength and hardness due to its low relative density, and it also contains lead, which is a harmful element to the human body.

Method used

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  • High strength self-lubricating iron-copper powder composite material and preparation method thereof
  • High strength self-lubricating iron-copper powder composite material and preparation method thereof
  • High strength self-lubricating iron-copper powder composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see figure 1 and figure 2 , figure 1 It is a sectional view of the side plate of the gear oil pump, figure 2 It is a top view of the side plate parts of the gear oil pump.

[0037] The side plate of the gear oil pump is made of the high-strength self-lubricating iron-copper powder composite material and the preparation method thereof of the present invention.

[0038] In this embodiment, the high-strength self-lubricating iron-copper powder composite material is composed of an iron alloy matrix 2 and a copper alloy layer 1 as a surface layer; wherein, the composition of the iron alloy matrix 2 by weight percentage is shown in Table 1; the material of the copper alloy layer 1 is shown in Table 1. The composition in weight percent is shown in Table 2; the thickness of the copper alloy layer 1 is set to 1.0 mm.

[0039] In this embodiment, the high-strength self-lubricating iron-copper powder composite material is prepared according to the following steps:

[0040] ...

Embodiment 2

[0058] In this embodiment, the parts manufactured from the high-strength self-lubricating iron-copper powder composite material and its preparation method are hydraulic pump oil distribution plates.

[0059] The high-strength self-lubricating iron-copper powder composite material of the hydraulic pump oil distribution plate parts and its preparation method are the same as in Example 1, except that:

[0060] The thickness of the copper alloy layer 1 in the present embodiment is designed to be 0.5 mm; the specific chemical composition of the copper alloy layer 1 is shown in Table 4; the specific chemical composition of the iron alloy substrate 2 is shown in Table 5;

[0061] Heat nickel powder, tin powder, iron powder and copper powder in vacuum at 180°C for 2.5 hours to relieve stress and temper;

[0062] The pressing pressure of warm pressing on the press with warm pressing device is 650MPa, the powder temperature of iron alloy substrate warm pressing powder and copper alloy l...

Embodiment 3

[0074] The parts manufactured by the high-strength self-lubricating iron-copper powder composite material and its preparation method in this embodiment are racks.

[0075] The high-strength self-lubricating iron-copper powder composite material and its preparation method described in the rack part are the same as in Example 1. The difference with embodiment 1 is:

[0076] In this embodiment, the thickness of the copper alloy layer 1 is 2 millimeters; the specific chemical composition of the copper alloy layer 1 is shown in Table 7, and the specific chemical composition of the iron alloy substrate 2 is shown in Table 8;

[0077] Heat nickel powder, tin powder, iron powder and copper powder respectively at 190°C for 3 hours in vacuum or protective atmosphere to relieve stress and temper;

[0078] The pressing pressure of warm pressing on the press with warm pressing device is 680MPa, the powder temperature of iron alloy substrate warm pressing powder and copper alloy layer warm...

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Abstract

The invention relates to a high strength self-lubricating iron-copper powder composite material, a preparation method and application thereof. The composite material is characterized by comprising an iron alloy base body and a copper alloy base body as a surface layer, wherein the iron alloy base body contains Cu, C, Sn, Pb and Fe, and the copper alloy base body contains Ni, C, MoS2, Sn, Fe, Pb and Cu. The preparation method comprises the following steps of: respectively preparing copper alloy layer warm-pressing powder and iron alloy base body warm-pressing powder; filling the warm-pressing powder into a mould and then pressing once to form a green compact; sintering the green compact in the protection atmosphere; and shaping the sintered sintering compact in the mould so that the composite material is prepared. By the invention, the cost of parts can be greatly reduced on the basis of ensuring the use performance of the parts.

Description

technical field [0001] The invention relates to a metal-based self-lubricating composite material, in particular to a high-strength self-lubricating iron-copper powder composite material and a preparation method thereof. Background technique [0002] High-strength self-lubricating copper alloy powder metallurgy parts are widely used in industries such as automobiles, construction machinery, and household appliances. With the rapid development of modern industry, service conditions such as high speed and heavy load put forward higher performance requirements for self-lubricating copper alloy powder metallurgy parts. Due to the low strength and hardness of the current general-purpose powder metallurgy copper alloy structural parts, its application range is restricted. For example, the current "Sintered Tin Bronze Structural Material JB / T9139-1999" in my country has low tensile strength and hardness due to its low relative density, and it also contains lead, which is a harmful...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/02C10M125/02C10M125/22C22C38/60C22C9/06
Inventor 徐伟田清源解挺
Owner 合肥波林新材料股份有限公司
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