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Four Emergency Treatment Methods For Die Casting Leakage

  Four emergency treatment methods for die casting leakage

  In the event of die casting leakage can be used to improve the four methods: filling method, leakage method, acid corrosion method, brazing method. The following are the same as the "

  Due to the use of engineering machinery in the process of corrosion and the role of alternating load, die castings (such as engineering machinery diesel engine oil pan, water tank and transmission shell, etc.) defects prone to stress concentration, so that the defects gradually expand to lead to infiltration leak. Through practice, I summarize the four ways to deal with die casting leakage.

  Fill the law

  For the die casting model hydraulic pressure test, find the leakage site, and then use the chisel along the crack to open a depth of not less than 1.5mm small groove, degreasing treatment, the tank surface placed horizontally, you can use AR-4 glue to fill Plugging in addition to fill the groove, part of the gravity can also be infiltrated into the trachoma, to achieve the purpose of plugging. Note that when using this method, the die casting should be dry before filling, to be filled after curing, should be carried out hydrostatic test to check whether the leakage.

  2. Leakage method

  The die casting leakage site at its lowest place, the metal trap dissolved in water, the water pressure test method will rise to the die casting pressure of about 1.5 times the working pressure, so that the water containing trapping agent through the trachoma of the filter will stick Junction block in the trachoma, with the continuous leakage of the trachea in the adhesive more and more together, and finally blocked the trachoma. Stop the leak, and then keep the pressure 20min, and then let go of the leakage agent, placed 24-28h, let it dry and adhesive curing. Re-do test check, do not leak can be used.

  3. Acid corrosion method

  With hydrochloric acid corrosion method to eliminate the pores, trachoma and cracks and other defects. The specific approach is to use gasoline to clean the box, and then pour 5% -10% hydrochloric acid solution soak day and night, so that hydrochloric acid and die casting a full chemical reaction, due to replacement, the formation of ferrous chloride can fill the tiny trachoma , Cracks and pores. But after the corrosion of the box, must be added a small amount of 0.5% -10% sodium hydroxide alkaline solution for cleaning to remove the residual hydrochloric acid solution Atlas air compressor accessories.

  4. Brazing method

  die castings are generally gray cast iron, available brazing repair. Brazing to thoroughly clean the surface of the rust, oil, oxides and sediment, and then use the flux to further clean the trachoma or micro-cracks, and then melt the solder into the trachoma or crack, until the solder after condensation Welded, die castings will not leak again.


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Contact us

Shenzhen Runpeng Precision Hardware Co.,Ltd

The contact:Susan Liao

Mobile:86-18925258235

Phone:86-755-29886925 

Fax:86-755-29886926

E-mail:sales@szrunpeng.cn

Web:www.sz-runpeng.com

Add:Building 69-70, 4th Industrial Zone, Mashantou, Gongming Town,Shenzhen,China.


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