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Wear-resistant raking tooth for railway sieve cleaner and manufacturing process thereof

A technology for cleaning sieves and gears, which is applied in the manufacture of tools, roads, metal processing equipment, etc., can solve the problems of high cost of use, and achieve the effects of extended replacement cycle, strong wear resistance, and strong wear resistance

Inactive Publication Date: 2011-06-22
韩庆贤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The teeth of the existing sieve cleaning machines are mostly made of steel through forging, machining and heat treatment. At present, the service life of the teeth is less than 10 kilometers and they will be scrapped due to wear and tear. Therefore, the cost of use is very high.

Method used

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  • Wear-resistant raking tooth for railway sieve cleaner and manufacturing process thereof
  • Wear-resistant raking tooth for railway sieve cleaner and manufacturing process thereof

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Embodiment Construction

[0023] see figure 1 , the present invention adopts a new material and utilizes a new process to complete the one-time casting of two materials through presetting, preheating and investment. Become a composite alloy wear-resistant gear.

[0024] A piece of wear-resistant hard alloy core 2 is inlaid and cast on the upper end of the tooth picker body 1 of the present invention, that is, the heart of the picker end, and its material hardness reaches HRA80-85, and its bending strength is ≥ 2100N / mm 2 , Tungsten-cobalt alloy can be used; it is suitable for the cleaning condition of the screen which is wear-resistant and can resist multiple impacts of small energy.

[0025] The said grilling tooth of the present invention, above-mentioned wear-resistant cemented carbide core 2 parts are outcasted the scraping end 3 of low-alloy wear-resistant steel material and grilling tooth body 1, and its performance meets the requirements of use through a special heat treatment process.

[0026...

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PUM

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Abstract

The invention relates to a wear-resistant raking tooth for a railway sieve cleaner and a manufacturing process thereof. The raking tooth comprises a raking tooth body and a ballast raking end arranged at the front end of the raking tooth body, wherein a wear-resistant hard alloy core is arranged in the ballast raking end and comprises a cylindrical small head exposed to the ballast raking end, a cone-shaped large head cast in the ballast raking end and a positioning pin of the wear-resistant hard alloy core; and the positioning pin is a steel cylindrical rod. The manufacturing process comprises the steps of presetting, molding a wax model, molding a fireproof material model, dewaxing, preheating, melting a film / casting, removing the model and welding. The raking tooth has the advantages of high binding force, high strength, wear resistance, long service life and low cost.

Description

technical field [0001] The invention relates to a wear-resistant gear and a manufacturing process thereof, in particular to a wear-resistant gear for a railway screen cleaner and a manufacturing process thereof. Background technique [0002] The railway ballast bed should be cleaned and screened regularly to ensure the gradation, cleanliness, elasticity and drainage of the track ballast. This cleaning operation is accomplished by various types of sieve cleaning machines, wherein the teeth on the sieve cleaning machine are directly used for excavating and picking up and transporting the main parts of the ballast. [0003] The teeth of the existing sieve cleaning machines are mostly made of steel through forging, machining and heat treatment. At present, the service life of the teeth is less than 10 kilometers and they will be scrapped due to wear and tear. Therefore, the cost of use is very high. . Contents of the invention [0004] The technical problem to be solved by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/28E01B27/06B22D25/02B22C9/04B22C9/24
Inventor 韩庆贤
Owner 韩庆贤