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Ceramic microcrystal fused alumina grinding wheel for crankshaft grinding and manufacturing method thereof

A technology of ceramic crystallites and grinding wheels, which is applied in the manufacture of tools, abrasives, grinding devices, etc., can solve the problems of inability to process automobile crankshafts and high prices, and achieve a grinding wheel with good shape retention, low price and strong grinding ability. Effect

Inactive Publication Date: 2015-07-08
QINGDAO SISA ABRASIVES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defects that ordinary abrasive grinding wheels in the prior art cannot process automobile crankshafts, and the use of superabrasive grinding wheels is expensive, and to provide a ceramic microcrystalline corundum grinding wheel for grinding crankshafts and a manufacturing method thereof, which has a micropore structure , for grinding the oil cover, flange end face and wheel hub of the engine crankshaft, replacing ordinary grinding wheels, improving production efficiency, machining accuracy and durability, while reducing costs, and meeting the use and grinding requirements of machine tools

Method used

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  • Ceramic microcrystal fused alumina grinding wheel for crankshaft grinding and manufacturing method thereof
  • Ceramic microcrystal fused alumina grinding wheel for crankshaft grinding and manufacturing method thereof
  • Ceramic microcrystal fused alumina grinding wheel for crankshaft grinding and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 , Shown in 2, the grinding wheel of the present invention includes a grinding part 1, a clamping part 2 and a grinding wheel hole 3, and the outer edge of the grinding part 1 has a Z-shaped interface.

[0055] The manufacturing steps of the present embodiment 1 are as follows:

[0056] 1) Selection of low-temperature vitrified bond agent No. 3 in Table 1: Weigh various raw materials, put them into a ball mill and mix for 18-20 hours, then melt, quench, pulverize, and sieve to make ceramic low-temperature bond.

[0057] 2) Ingredients:

[0058] a) Grinding part: weigh according to the grinding wheel formula, choose 80# for CA abrasive, choose 100# for ordinary corundum abrasive, 10 parts of ceramic microcrystalline corundum (CA) abrasive, 30 parts of single crystal corundum abrasive, 60 parts of white corundum abrasive, 18 parts of low temperature vitrified bond, 8 parts of pore former, 3 parts of whisker material, 4 parts of wetting agent, 1 part of c...

Embodiment 2

[0077] In the present embodiment, the grinding wheel structure is the same as that in Embodiment 1,

[0078] The manufacturing steps of this embodiment are as follows:

[0079] 1) Selection of low-temperature vitrified bond agent No. 4 scheme in Table 1: Weigh various raw materials, put them into a ball mill and mix for 18-20 hours, then melt, quench, pulverize, and sieve to make ceramic low-temperature bond.

[0080] 2) Ingredients:

[0081] a) Working layer: Weigh according to the grinding wheel formula, choose 60# for CA abrasive, choose 80# for ordinary corundum abrasive, 30 parts of ceramic microcrystalline corundum (CA) abrasive, 20 parts of single crystal corundum abrasive, 50 parts of white corundum abrasive, 15 Parts of low temperature vitrified binder, 5 parts of pore forming agent, 4 parts of whisker material, 3 parts of wetting agent, 0.9 part of coloring agent.

[0082] b) Non-working layer: weigh according to the grinding wheel formula, choose 80# corundum abra...

Embodiment 3

[0100] In the present embodiment, the grinding wheel structure is the same as that in Embodiment 1,

[0101] The manufacturing steps of this embodiment are as follows:

[0102] 1) Selection of low-temperature vitrified bond agent No. 5 scheme in Table 1: weigh various raw materials, put them into a ball mill and mix for 18-20 hours, then melt, quench, pulverize, and sieve to make ceramic low-temperature bond.

[0103] 2) Ingredients:

[0104] a) Working layer: weigh according to the grinding wheel formula, choose 70# for CA abrasive, choose 80# for ordinary corundum abrasive, 50 parts of ceramic microcrystalline corundum (CA) abrasive, 40 parts of single crystal corundum abrasive, 10 parts of white corundum abrasive, 20 Parts of low temperature ceramic bond, 10 parts of pore former, 2 parts of whisker material, 6 parts of wetting agent, 1.2 parts of coloring agent.

[0105] b) Non-working layer: weigh according to the formula of the grinding wheel, choose 80# corundum abrasi...

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Abstract

The invention relates to a ceramic microcrystal fused alumina grinding wheel for crankshaft grinding and a manufacturing method thereof. The grinding wheel is characterized in that a grinding portion comprises 10-50 parts of ceramic microcrystal fused alumina grinding materials with the granularity being 46-80#, 20-40 parts of monocrystal fused alumina materials with the granularity being 60-100#, 10-60 parts of white fused alumina grinding materials with the granularity being 60-100#, 10-20 parts of low-temperature ceramic bond, 5-10 parts of pore-forming agents, 2-4 parts of crystal whisker materials, 3-6 parts of wetting agents and 0.6-1.2 parts of coloring agents, and a clamping portion comprises 100 parts of white fused alumina grinding materials with the granularity being 60-100#, 10-20 parts of low-temperature ceramic bond, 2-4 parts of crystal whisker materials and 4-6 parts of wetting agents. The ceramic microcrystal fused alumina grinding wheel has the advantages of being strong in grinding capacity, high in machining precision and efficiency, long in service life, good in heat dissipation, low in finishing frequency, good in self-sharpening performance, good in processing surface roughness, long in service life and much cheaper than a superhard material grinding wheel, not burning workpieces and saving the cost.

Description

technical field [0001] The invention belongs to the field of grinding wheels and manufacturing methods thereof, in particular to a ceramic microcrystalline corundum grinding wheel for crankshaft grinding and a manufacturing method thereof. Background technique [0002] The crankshaft is one of the key parts of the automobile engine. Its processing quality directly affects the power performance of the automobile engine. The geometric accuracy of the crankshaft journal, such as roundness, cylindricity, parallelism, and smoothness, has gradually increased. In addition to the machine tool itself, the choice of processing tools is another important factor affecting the machining accuracy of the crankshaft. Proper use of grinding wheels can not only give full play to the performance of the grinding machine, increase productivity, reduce costs, but also ensure the processing quality of product parts. It is generally believed that ordinary abrasive grinding wheels are difficult to ...

Claims

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Application Information

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IPC IPC(8): B24D3/14B24D3/34B24D18/00C04B35/14
CPCB24D3/14B24D3/342B24D18/0009C04B35/10C04B35/803C04B2235/3203C04B2235/3215C04B2235/3217C04B2235/3232C04B2235/3284C04B2235/3293C04B2235/34C04B2235/3409C04B2235/3418C04B2235/5276
Inventor 单冬冬逯雪梅姜志军
Owner QINGDAO SISA ABRASIVES CO LTD
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