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On the production mannered null steel sheet surface of the tin free
On the production mannered null steel sheet surface of the tin free
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机译：在生产好的无锡薄钢板表面上无锡
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摘要
PROBLEM TO BE SOLVED: To produce a tin-free steel excellent in corrosion-resistance and furthermore good in weldability, on the surface of a steel sheet, by forming a metallic chromium layer contg. amorphous ones, preferably composed of amorphous ones completely at specified coating weight and, on the surface of the layer, forming a chromium-hydrated oxide layer at specified coating weight. ;SOLUTION: On the surface of a steel sheet, a metallic chromium layer contg. amorphous ones, preferably composed of amorphous ones totally is formed, and furthermore, on the surface of the layer, a chromium-hydrated oxide layer is formed. The amorphous metallic chromium layer is small in pinholes and is excellent in corrosion resistance, and its coating weight is preferably regulated to 30 to 200 mg/m2 per side. The metallic chromium layer contains trivalent chromium ions and formic acid anions as a complexing agent, furthermore contains polyethylene glycol according to necessary and is formed preferably by a plating bath of pH1.0 to 2.0. On the surface of the metallic chromium, a chromium-hydrated oxide layer is formed by 3 to 25 mg/m2 coating weight per side expressed in terms of metallic chromium to reinforce the corrosion resistance of the metallic chromium layer without checking the weldability.;COPYRIGHT: (C)1999,JPO
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机译：解决的问题：通过在钢板的表面上形成一层连续的金属铬层，从而生产出一种具有优异的耐腐蚀性和可焊性的无锡钢。无定形层，优选完全由无定形层组成的无定形涂层，并在该层的表面上按无定形涂层的重量形成水合铬氧化物层。 ;解决方案：在钢板表面上，一层连续的金属铬层。形成无定形的，优选完全由无定形的构成的无定形的无定形的无定形的无定形的无定形的无定形的无定形的无定形氧化层。非晶态金属铬层的针孔小且耐蚀性优异，优选将其镀层重量调节为每侧30〜200mg / m 2 。金属铬层含有三价铬离子和甲酸阴离子作为络合剂，此外根据需要还含有聚乙二醇，优选通过pH1.0〜2.0的镀浴形成。在金属铬的表面上，每侧形成3至25 mg / m 2 涂层重量的水合氧化铬层，以金属铬表示，以增强金属铬的耐腐蚀性层，无需检查可焊性。;版权：（C）1999，JPO
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