High temperature and erosion resistant centrifugal roller and its manufacturing method

A manufacturing method and technology for centrifugal rollers, applied in the field of centrifuges, can solve the problems of easy thermal deformation of the roller blank, easy expansion and cracking of the surface of the roller, reduced cotton yield and product quality, etc. The effect of increasing the number of reuses and reducing the difficulty of combining

Active Publication Date: 2005-06-22
BEI JING NEW BUILDING MATERIALGRP +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] First, due to the high price of argon gas used in stainless steel welding wire and stainless steel shielded welding, the cost of processing or repairing such centrifugal rollers is very high;
[0005] Second, the roll blank is easily deformed by heat during production, and the reuse rate is low;
[0006] Third, the surface of the roller is easy to expand and crack after being heated, and the finish is not high, which affects the quality of the finished product
[0007] Due to the above-mentioned defects, the production cost is very high, and the cotton yield and product quality are reduced

Method used

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  • High temperature and erosion resistant centrifugal roller and its manufacturing method
  • High temperature and erosion resistant centrifugal roller and its manufacturing method

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Embodiment Construction

[0018] After an in-depth analysis of the reasons for the above-mentioned defects of the existing centrifugal roll with a stainless protective layer, it is found that the material of the stainless steel protective layer is quite different from that of the roll blank, and the thermal conductivity of stainless steel is not as good as that of the roll blank. The billet is easily deformed when heated, and it is difficult to reuse. At the same time, due to the difference in thermal conductivity between the two, the cooling effect is not understood. In addition, since stainless steel is a high-alloy steel, as the alloy content increases, the quenching sensitivity of the steel during welding will increase, which will increase the hardness and brittleness of the joint part and the internal stress. At the same time, the expansion system will increase due to the decrease in thermal conductivity. , the internal stress of the joint part becomes larger, which makes the roll blank easy to def...

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Abstract

This invention discloses a centrifugal roller able to endure high temperature and brushing, which comprises the roller blank parent, protective layer on the outskirt of the parent. This invention also discloses a process method, which comprises the following steps: adopting general steel material to get roller parent; wielding the roller circle by use of manganese and steel wielding wire and carbon dioxide automatic wielding machine; drilling cool water into the inner hole of the roller to form the centrifugal manganese steel protective layer; then processing the centrifugal roller to get the needed centrifugal roller with protective layer.

Description

technical field [0001] The invention relates to a centrifuge for processing high-temperature melt, in particular to a centrifugal roller on the centrifuge and a manufacturing method thereof. Background technique [0002] In the production of thermal insulation materials such as rock wool and mineral wool, the main process is that the high-temperature melt is centrifuged into fibers at high speed by a four-roller centrifuge, so the centrifuge is one of the main production equipment. As the main part of the centrifuge, the centrifugal roller must be resistant to high temperature and erosion. In order to ensure the use, all manufacturers use stainless steel welding wire (HICr18Ni9Ti) to process the protective layer on the centrifugal roller. Based on the cost problem, the centrifugal roller blank body is generally processed by ordinary steel. [0003] This kind of centrifugal roller with stainless steel as the protective layer maintains a good level in terms of service time, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B04B7/08B23K5/18B23K35/24
Inventor 马壮杜春田杨刚闫喜宝高宝文王全柱
Owner BEI JING NEW BUILDING MATERIALGRP
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