Soldering tin material used for automotive glass hot-coating belts and application of soldering tin material

Abstract

The invention discloses a soldering tin material used for automotive glass hot-coating belts and application of the soldering tin material. The soldering tin material is impact-resistant, temperature-resistant, proper in tensile-shear strength, low in welding temperature and melting point, capable of greatly reducing stress change among alloy materials and effectively preventing fatigue ageing and shedding of metals, excellent in performance and stable in quality, has all aspects to reach or exceed requirements of international similar products and is capable of providing high-quality service for automotive glass factories. The soldering tin material comprises tin, lead, silver and bismuth and is characterized by comprising, by weight, 20-30% of the tin, 58-68% of the lead, 4-14% of the bismuth and 0.3-5% of the silver.

Description

technical field [0001] The present invention relates to a kind of soldering tin material used in automotive glass heating coating tape and its application, more specifically relates to a kind of excellent impact resistance, temperature resistance and tensile shear strength which meet or exceed the requirements of similar international products. Solder materials with high performance and stable quality that provide high-quality services for domestic and foreign automotive glass factories and their application in the preparation of solder wire or preformed tongues. Background technique [0002] At present, the solder materials used for automotive glass heating coating tape mainly rely on imports, usually imported from Germany. The alloy composition used in this product is: 25% tin, 72% lead, and 3% silver; however, the product’s Poor weather resistance, high operating temperature, easy to cause damage to the heating coating, difficult welding, or occurrence of false welding, e...

AI Technical Summary

Problems solved by technology

[0002] At present, the solder materials used for automotive glass heating coating tape mainly rely on imports, usually imported from Germany. The alloy composition used in this product is: 25% tin, 72% lead, and 3% silver; however, the product’s Poor weather resistance, high operating temperature, easy to cause damage to the heating coating, difficult welding, or occurrence of false welding, etc. The expansion coefficient of the solder joint is large, which makes the stress between the automotive glass and the heating coating layer unsuitable, thermal expansion and contraction It is easy to cause solder joints to crack and fall off

As a result, the rear windshield of the vehicle cannot be heated, so fogging and condensation will seriously affect the rear view visibility of the driver, causing incalculable accidents and losses. Therefore, there is an urgent need for a solder material that overcomes the above shortcomings