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Process for firing abrasive wheel for abrasion of steel ball

A technology for grinding steel ball grinding wheels and processes, applied in grinding devices, manufacturing tools, metal processing equipment, etc., can solve the problems of increasing the load of the cart mechanism, high construction costs, long construction time, etc., to ensure product quality, construction The effect of low cost and short construction time

Inactive Publication Date: 2004-03-17
圣戈班创新材料(泰州)有限公司
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AI Technical Summary

Problems solved by technology

Although the tunnel kiln has the advantages of high production efficiency, low labor intensity, and stable product quality, but because the airflow and flame in the kiln flow in a horizontal direction, the entire production process is continuous, and it is difficult to adjust the thermal system in the kiln and the pressure in the kiln. In addition to the high construction cost, large investment and long construction time, it is not suitable for the firing of steel ball grinding wheels with special requirements and complex specifications.
In addition, due to the high density of the steel ball grinding wheel and the single weight, the tunnel kiln is used for production, which increases the load on the trolley mechanism. When the pressure in the kiln is greater than the tunnel pressure, hot gas and even burning flames leak from the kiln car joint gap. Into the tunnel, the metal parts of the kiln car will be burned, the resistance will increase, the operation will be difficult, and the load of the cart mechanism will be further increased. In severe cases, production will be forced to stop; Leakage into the kiln at the joint of the car makes the firing system disorder, and at the same time aggravates the stratification of the air flow in the pre-tropical zone, which seriously affects the product quality

Method used

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Embodiment Construction

[0008] In this embodiment, the burning of the steel ball grinding wheel is carried out in a double-flue down-flame circular kiln, and the volume of the circular kiln is 32M 3 , the ratio of its height to inner diameter is 0.7, the maximum firing temperature is 1300, and the firing time is 90 hours. The product has been inspected by the National Abrasives Quality Supervision and Inspection Center. Its limit deviation, shape and position tolerance, hardness level and hardness uniformity all meet the requirements of the national standard. ~2.30mm, after use, the grinding diameter is less than 76.2mm, the material is GG15 steel balls, the grinding wheel can grind 7~8 discs of steel balls at a time, and the surface roughness of the processed steel balls reaches However, the steel ball grinding wheel fired in the tunnel kiln can only grind 4 to 5 discs of steel balls once for dressing, and the surface roughness of the steel balls can only reach

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Abstract

A process for firing the abrasive-disk used to grind steel balls includes preheating, high-temp firing at 1260-1300 deg.C for 78-100 hr in down-draft kiln, maintaining the temp and cooling. Its advantages are small volume of down-draft kiln, low cost, and high quality of product.

Description

technical field [0001] The invention relates to a manufacturing method of an industrial grinding wheel, in particular to a firing process of a steel ball grinding wheel with special requirements. Background technique [0002] Grinding wheel is an indispensable processing tool in the machining industry. Grinding steel ball grinding wheel refers to a special grinding wheel used for grinding spherical steel balls with a diameter below 76.20mm. The use and manufacturing process of steel ball grinding wheels are quite different from ordinary ceramic grinding wheels. The steel ball grinding process requires the grinding wheel to have high hardness, high density, fine particle size, uniform structure and certain toughness, and the first condition is to have extremely high hardness. In order to meet the above requirements, special technological measures must be taken, among which the firing process of the grinding wheel is very important. [0003] At present, the firing process of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D18/00
Inventor 黄敬民
Owner 圣戈班创新材料(泰州)有限公司
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