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Repair process for cast micropores and cracks

A micro-hole and crack technology, applied in the field of casting micro-hole and crack repair technology, can solve the problems of many processes, unreasonable process arrangement, long time, etc., and achieve the effect of reasonable process, fast repair and short time.

Inactive Publication Date: 2016-07-20
CHONGQING YINGRUISHENG DIE CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For loose castings, micropores, and cold and hot cracks of 0-0.5 mm caused by stress during the welding process, the existing repair schemes for casting micropores and cracks have unreasonable process arrangements, numerous processes, and long time. Does not meet the requirements and needs to be improved to improve performance

Method used

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with embodiment:

[0011] A repair process for casting micropores and cracks is characterized in that it includes the following requirements:

[0012] (1) Use heating to remove water from the casting, put the casting in an oven, and keep it warm at 120-150°C for 2-4 hours. During on-site construction, use the oxygen-acetylene flame heating method. You must wait for the temperature of the casting to return to 20-40 Glue can only be applied at ℃;

[0013] (2) Using soaking method, heat the casting to remove water and cool it to 30-50°C, then put it into the tank, add an appropriate amount of penetrant, take it out after soaking for 30 minutes, wipe off the residual penetrant on the surface and wait for it to solidify ;

[0014] (3) After the water is removed, use 121 penetrating agent to drip into the loose micropores. It should be dripped repeatedly 2-3 times with an interval of 5-10 minutes. After cu...

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PUM

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Abstract

The invention discloses a repair process for cast micropores and cracks. The repair process is characterized by comprising the following steps that (1) water removing is conducted first on a casting in a heating mode, the casting is put into a drying oven, and heat preservation is conducted at the temperature of 120-150 DEG C for 2-4 hours; (2) after heating and water removing, the casting is cooled to 30-50 DEG C in a soaked mode and then put into a trough, an appropriate amount of a penetrant is added, and the casting is taken out after being soaked for 30 minutes; (3) after water removing, a 121 penetrant is dripped into the loose micropores, the 121 penetrant is dripped repeatedly for two to three times, the time interval is 5-10 minutes, and room temperature solidification is conducted for 8 to 10 hours; and (4) the residual 121 penetrant on the surface layer of the casting cannot be solidified and can be wiped away with cotton yarn after construction. The repair process is reasonable in working procedure and low in cost. All parameters are matched reasonably and harmoniously, time is short, and operation is simple.

Description

technical field [0001] The invention relates to a process for repairing casting micropores and cracks. Background technique [0002] For loose castings, micropores, and cold and hot cracks of 0-0.5mm caused by stress during the welding process, the existing repair schemes for casting micropores and cracks have unreasonable process arrangements, numerous processes, and long time. Does not meet the requirements and needs to be improved to improve performance. Contents of the invention [0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a casting micropore and crack repair process with reasonable process, simple operation, short time and low manufacturing cost. [0004] To achieve the above object, the invention provides a repair process for casting micropores and cracks, which is characterized in that it includes the following requirements: [0005] (1) Use heating to remove water from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00B23P6/04
Inventor 不公告发明人
Owner CHONGQING YINGRUISHENG DIE CASTING
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