Bearing slip-in material and making method

A manufacturing method and a technology of bearings, which are applied to bearing components, shafts and bearings, earthwork drilling, etc., can solve problems such as poor friction reduction and anti-seizing performance, unsatisfactory load-bearing performance, and insufficient service life, etc., and achieve friction reduction Effect of improved performance and wear resistance, smooth bearing torque and temperature, high strength and load carrying capacity

Inactive Publication Date: 2003-08-27
SINOPEC OILFIELD EQUIP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing bearing sleeve materials are usually made of copper alloy. Although this material has good anti-seizure performance and anti-friction performance, its wear resistance and strength are poor, so its bearing capacity is low and its service life is not long enough; As an insert material, although it has good wear resistance, it has poor anti-friction and anti-occlusion properties, so its load-bearing performance is not ideal.

Method used

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  • Bearing slip-in material and making method
  • Bearing slip-in material and making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The raw material ratio of the steel-based porous skeleton is: Cu2%, Mo1%, C2%, Fe balance, the infiltration agent is pure Cu infiltration agent, the steel-based porous skeleton is vacuum sintered at 1130-1150 °C, the steel-based The density of the porous skeleton is controlled at 6.2-6.5g / cm 3 Within the range, after vacuum sintering and infiltration at 1130-1150°C for 60 minutes, the infiltration amount of pure Cu is between 14-20% of the total weight of the material by weight, and the density of the made insert bearing material is 7.6-8.0g / cm 3 . In the bearing experiment, the average bearing capacity can reach 96.6KN at a speed of 166rpm, and the bearing capacity has increased by 38% year-on-year.

Embodiment 2

[0024] The raw material ratio of the steel-based porous skeleton is by weight: Cu5%, Ni2%, Cl%, Fe balance, infiltration agent is pure Cu-5%Fe-5%Mn (Fe5%, Mn5%, Cu balance ) copper-based infiltration agent, the steel-based porous skeleton is sintered under the protection of hydrogen at 1120-1140 °C, and infiltrated with hydrogen protection at 1130-1150 °C for 80 minutes. In the bearing experiment, the average bearing capacity can reach 112.1KN at a speed of 166rpm, and the bearing capacity has increased by 60% year-on-year.

Embodiment 3

[0026] The raw material ratio of the steel-based porous framework is by weight: Cu2%, Ni2%, C1.5%, Fe balance, the infiltration agent is pure Ag infiltration agent, and the steel-based porous framework is protected by hydrogen at 1130-1150 °C It is sintered and infiltrated with hydrogen protection at 1100-1120°C for 60 minutes. The average bearing capacity of the bearing test can reach 90.2KN at 166rpm, and the bearing capacity has increased by 30% year-on-year.

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Abstract

The invention relates to a kind of bearing inlay materials which applies to be used in condition of burden, especially appleis to roller bit. It includes steel group lacunaris frame, adds copper group or silver group penetrating agent in the frame. The frame is made up of reductive iron powder, electrolytic copper pwoder, nickel powder, molybdenum-iron powder and graphite powder, then compresses and fires them into the product. The weight proportion of the ingredients is: Cu 0.5-7.5%, C 0.3-3%, Ni 0-10%, Mo 0-3%, the remnants are Fe.

Description

technical field [0001] The invention relates to a composite structure bearing insert material suitable for use under heavy load conditions, especially suitable for use in cone heads and a manufacturing method thereof. The bearing insert material can be widely used in the strengthening of sliding bearing parts, especially the roller cone bit bearing. Background technique [0002] As a supporting component, bearings have been widely used in various mechanical devices and equipment. As far as the roller cone bit is concerned, with the development of drilling technology, high drilling pressure and high speed drilling have become the two main development directions at present, which puts forward higher requirements on the bearing performance and capacity of the roller cone bit bearing. The bearing structure of the existing roller cone bit is mainly divided into two types, one is to directly form a bearing pair on the cone palm, and the other is to use an insert structure bearing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/06C22C9/02C22C38/00C22C38/44E21B10/22F16C33/06F16C33/24
Inventor 张烈华王才德
Owner SINOPEC OILFIELD EQUIP CORP
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