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Special compound grinding agent for valve flange and preparation method of special compound grinding agent

An abrasive and flange technology, which is applied in the field of special composite abrasive for valve flanges and its preparation, can solve the problems of easily damaged grinding tools, and achieve the effects of accelerating the grinding process, enhancing the grinding effect, and stabilizing properties

Inactive Publication Date: 2015-05-13
ANHUI SRILL VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although most abrasives can enhance the grinding effect and shorten the grinding time, they are easy to damage the lapping tool during use.

Method used

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Embodiment Construction

[0016] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0017] A special compound abrasive for valve flanges, made of the following raw materials in mass fraction:

[0018] Boron carbide 60%, diatomite 6%, corundum 4%, chromium oxide 4%, white carbon black 3%, putty powder 2%, calcium silicate 1%, polyvinyl alcohol 1%, gelatin 0.5%, starch 0.5% , oleic acid 2%, ethanol 6%, water 10%.

[0019] A method for preparing a special composite abrasive for valve flanges, mainly comprising the following steps:

[0020] (1) Add gelatin and water to the high-speed mixer, heat up to 65-70°C and mix for 5-10 minutes, then add boron carbide, corundum and chromium oxide, continue mixing for 15-20 minutes, and finally cool down to obtain the mixed solution I;

[0021] (2) Add diatomaceous earth, white carbon black an...

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Abstract

The invention discloses a special compound grinding agent for a valve flange and a preparation method of the special compound grinding agent, and relates to the technical field of valve manufacture. The special compound grinding agent is prepared from raw materials in percentage by mass as follows: 60%-65% of boron carbide, 5%-8% of diatomaceous earth, 3%-5% of carborundum, 3%-5% of chromium oxide, 2%-3% of white carbon black, 2%-3% of putty powder, 1%-2% of calcium silicate, 1%-2% of polyvinyl alcohol, 0.5%-1% of gelatin, 0.5%-1% of starch, 2%-3% of oleic acid, 5%-10% of ethanol and 5%-10% of water. Boron carbide is taken as a main abrasive, appropriate quantities of auxiliary abrasives and dispersing agents are added, and the prepared grinding agent is powdery, has stable performance and is convenient to store and transport; during use, all that is required is to add an appropriate amount of water to a mixture, the mixture is blended to be thick, a to-be-ground flange is coated with the thick product, the grinding process can be accelerated, the grinding effect is enhanced, and the grinding agent has a certain protection function on a grinding tool.

Description

Technical field: [0001] The invention relates to the technical field of valve manufacturing, in particular to a special composite abrasive for valve flanges and a preparation method thereof. Background technique: [0002] The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. Classified according to the way the valve is connected to the pipeline, the valves include flange connection valves, thread connection valves, welding connection valves, clamp connection valves and ferrule connection valves. Among them, flange connection valves are the most widely used type of valves. The valve body of this type of valve has a flange. During the casting process, due to factors such as mold precision or operation, the surface of the flange will appear rough and uneven, which will directly affect the sealing performance and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09G1/02C09K3/14
CPCC09G1/02C09K3/1454
Inventor 夏明锁
Owner ANHUI SRILL VALVE CO LTD
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