Technique for manufacturing high-carbon steel thrust sliding bearing of high-power low speed diesel engine

A technology for thrust sliding bearings and manufacturing processes, applied to bearing components, shafts and bearings, mechanical equipment, etc., can solve problems such as low bond strength, edge defects, loose defects, etc., to reduce loose defects, reduce edge defects, reduce The effect of small machining allowances

Inactive Publication Date: 2010-12-08
CHONGQING YUEJIN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high carbon content of gray cast iron, it is difficult to enamel and cast Babbitt alloy on gray cast iron by using the traditional process of casting Babbitt alloy on low carbon steel. Therefore, the domestically produced gray cast iron thrust sliding bearings have Low bond strength, prone to problems such as shelling, loose defects, edge defects, fatigue fracture, and low life

Method used

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  • Technique for manufacturing high-carbon steel thrust sliding bearing of high-power low speed diesel engine
  • Technique for manufacturing high-carbon steel thrust sliding bearing of high-power low speed diesel engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049]A kind of concrete method step of the manufacturing process of high-carbon steel thrust sliding bearing of high-power low-speed diesel engine is as follows:

[0050] (1) Rough manufacturing

[0051] ① Rough casting

[0052] Cast high-carbon steel into a rough thrust sliding bearing of the required size through a mold, and cool it naturally in the air after demoulding, and reserve it for later use.

[0053] ② rough machining

[0054] After step (1)-① is completed, the thrust sliding bearing blank cast in step (1)-① is passed through a lathe, and the upper and lower planes are first turned and the center line and outline line are drawn. The two outer arc surfaces are milled with a milling machine on both sides, pouring surface and back.

[0055] ③Feeding groove processing

[0056] After the completion of steps (1)-②, around the pouring surface of the blank, through a lathe, first car the feeding groove, the width and depth of the feeding groove are both 5mm, and then t...

Embodiment 2

[0084] The specific method steps of a high-power low-speed diesel engine thrust high-carbon steel sliding bearing manufacturing process are as follows:

[0085] (1) Rough manufacturing

[0086] With embodiment 1. The feature is that the width and depth of the feeding groove are both 6mm, and the width and thickness of the stopper are both 6mm.

[0087] (2) Treatment of blank pouring surface

[0088] With embodiment 1. The characteristics are: the decarburization treatment temperature in the holding furnace is 930 DEG C, the holding time is 1.5 hours, the 9% NaOH solution prepared by industrial alkali is used for cleaning, and the 10% industrial hydrochloric acid is soaked for 4 minutes.

[0089] (3) The pouring surface is tinned

[0090] With embodiment 1. The characteristics are: the preheating temperature is 170°C, and the preheating time is 30 minutes. When tinning, soak in the tin pot for 3 minutes.

[0091] (4) Pouring Babbitt alloy

[0092] With embodiment 1.

[...

Embodiment 3

[0096] A kind of concrete method step of the manufacturing process of high-carbon steel thrust sliding bearing of high-power low-speed diesel engine is as follows:

[0097] (1) Rough manufacturing

[0098] With embodiment 1. The feature is that the width and depth of the feeding groove are both 4mm, and the width and thickness of the stopper are both 4mm.

[0099] (2) Treatment of blank pouring surface

[0100] With embodiment 1. The characteristics are: the decarburization treatment temperature in the holding furnace is 900 DEG C, the holding time is 2 hours, the 8% NaOH solution prepared by industrial alkali is used for cleaning, and the 10% industrial hydrochloric acid is soaked for 5 minutes.

[0101] (3) The pouring surface is tinned

[0102] With embodiment 1. The characteristics are: the preheating temperature is 150°C, the preheating time is 40 minutes, and when tinning, soak in the tin pot for 8 minutes.

[0103] (4) Pouring Babbitt alloy

[0104] With embodime...

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Abstract

The invention relates to a manufacturing craft of high carbon steel thrust sliding bearing for high power low speed diesel engines, belonging to a field of thrust sliding bearing manufacturing craft for large mechanical equipment. The process steps are as follows: roughcast manufacturing: roughcast pouring surface processing (decarburization processing, shot peening and rinsing): hot dip coating tin; pouring babbit alloy; machining and censoring. The manufacturing craft of high carbon steel thrust sliding bearing for high power low speed diesel engines has the advantages of simple technique, convenient operation, low production cost, good production safety, high degree of bonding for alloy layer of the finished products, less babbit alloy consumption, satisfied working requirement of the high carbon steel thrust sliding bearing for high power low speed diesel engine, wide application range in large mechanical equipment, in particular to oil tanker, large freighter and other high powerlow speed diesel engines with high load.

Description

technical field [0001] The invention belongs to the technical field of manufacturing thrust sliding bearings of large mechanical equipment, in particular to a manufacturing process of thrust sliding bearings for high-power low-speed diesel engines. Background technique [0002] Thrust sliding bearings are mechanical components used to axially locate and support shaft parts, and make relative sliding between bearing surfaces and bear axial loads to prevent axial movement of shaft parts. As a key basic component, it is widely used in large mechanical equipment such as electric motors, generators, internal combustion engines, gas turbines, and mining machinery. High-power low-speed diesel engines are widely used in the field of ships, especially high-load ships such as oil tankers and large cargo ships, due to their high load capacity, low fuel consumption, low pollution, and compact structure. The performance of the thrust sliding bearing has a direct impact on the performanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/14
Inventor 冀庆康谢久彬郑世良林继良王中江唐倩徐杰
Owner CHONGQING YUEJIN MACHINERY
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