CONTACT RESISTANCE AND QUALITY GLUE-WELDING CONNECTION WITH ELIMINATION OF CRACKS IN CAST IRON PARTS

Authors

  • S. Karabinesh ,
  • A. Povoliyshko

Abstract

There are the results of experimental studies of conditions – determining by contact resistance of the necessary contacts in the welding area of research glue-welding for secure connections steel-iron when used in eliminating cracks in the cast iron body parts chassis tractors. Their use in the formation of compounds glue-welding steel-iron to eliminate cracks in large parts is limited technologically and economically irrational. This is due to the difficulty of creating local baths in areas with cracks configuration defects, difficulty of forming a uniform coating on the work piece surface chemical composition, which leads to an uneven distribution of forces of the adhesive bond between the contacting surfaces and reduced quality of the connection.

Most low resistance contact area was obtained at realization of the method of combined – mechanical and chemical. Its use is limited by technological problem was the difficulty of obtaining the local baths in areas with cracks (complex configuration of the surface). The greatest resistance in the contact zone is obtained by milling, develop uneven structure. Less resistance to the contact zone was observed in the treatment of surfaces with a wire brush or abrasive wheel. This is due to a decrease in the microprotrusion and increase contact area.

References

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Published

2016-12-28

Issue

No. 251 (2016)

Section

Статті

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