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Part seam allowance seamless growing repairing method

A seamless, part technology, applied in the field of machining, can solve problems such as rising product rejection rate, and achieve the effects of low cost, large size repair range and wide application.

Active Publication Date: 2014-07-30
NINGBO STF HYDRAULIC TRANSMISSIONS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to processing errors or various reasons, the size of the parts after machining is smaller than the required size, resulting in an increase in the reject rate of the product

Method used

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  • Part seam allowance seamless growing repairing method

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Experimental program
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Effect test

Embodiment 1

[0019] The disadvantages of existing technology are as follows:

[0020] 1. Increase the size by electroplating; disadvantages: the size increase is within 0.1mm;

[0021] 2. The size of the single matching hole; Disadvantages: Parts are not universal, low efficiency and high cost.

[0022] Such as figure 1 As shown, a method for repairing the seam of a part seamlessly grows up, including:

[0023] 1) Knurling process: Use a knurling knife for out-of-tolerance parts to roll the surface into a mesh structure;

[0024] 2) Surface treatment: The knurled surface is cleaned with acetone or alcohol, and cleaned and dried to ensure that the surface is free of oil, water and other impurities;

[0025] 3) Mixing: Mix A and B cast iron glue in a ratio of 1:2, and stir well until the colors are completely consistent;

[0026] 4) Coating: Apply the mixed cast iron glue on the knurled surface with a special tool, press repeatedly to make it fully infiltrated with the substrate, and the...

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PUM

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Abstract

The invention relates to a part seam allowance seamless growing repairing method, comprising the following steps of: rolling the surface of an out-of-tolerance part into a network structure by adopting a knurling cutter; washing the knurled surface with acetone or ethyl alcohol, and cleaning and drying to ensure the surface to have no oil, water or other impurities; mixing cast iron glues A and B in proportion of 1: 2, and fully stirring until the colour is completely uniform; coating the mixed cast iron glue on the knurled surface by adopting a special tool, repeatedly pressing until the cast iron glue is fully immersed with a basal body, then coating until the thickness is 2-3mm, and remaining allowance to be convenient for processing; primarily hardening for three hours at the temperature of 25 DEG C, insulating for 3-4 hours at the temperature of 50-80 DEG C after primary solidification to improve comprehensive properties of a repairing layer by 20-30%, and carrying out various machining processes after 12 hours. The part seam allowance seamless growing repairing method provided by the invention has a wide size repairing range, the working performance and stress strength of a part can be changed, the cost is low, the efficiency is high, the application is wide, and the part seam allowance seamless growing repairing method provided by the invention is universal for conventional products.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a method for repairing the seams of parts with seamless growth. Background technique [0002] Due to processing errors or various reasons, the size of the parts after machining is smaller than the required size, resulting in an increase in the reject rate of the product. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for repairing parts without seams, which can increase the size of the parts without changing the working performance and stress strength of the parts, so that the size of the processed parts can meet the requirements. [0004] The technical solution adopted by the present invention to solve the technical problem is to provide a method for repairing parts without gaps, including: [0005] 1) Knurling process: Use a knurling knife for out-of-tolerance parts to roll the surface int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P6/00
Inventor 胡品容
Owner NINGBO STF HYDRAULIC TRANSMISSIONS CO LTD