Trivalent chromium-conversion processing solution containing aluminum-modified colloidal silica
一种胶态氧化硅、转化处理的技术,应用在氧化硅、二氧化硅、防腐涂料等方向,能够解决不利影响等问题
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Embodiment 1
[0023]The bolts obtained by zincate Zn plating with a thickness of 8 μm obtained by using the NZ-100 plating solution produced by Deepsol Co., Ltd. were immersed in the following trivalent chromium conversion treatment solution (put the bolts into a basket made of stainless steel stirring in). The treatment temperature was 35° C., and the treatment time was 40 seconds.
[0024] A trivalent chromium conversion treatment liquid was prepared by adding LUDOX AM produced by DuPont of the United States as colloidal silica in an amount of 30 g / L to 70 mL / L of ZT-444CS produced by Deepsol Co., Ltd. The pH of the treatment solution was adjusted to pH 2.7 with NaOH.
Embodiment 2
[0026] The bolts obtained by zincate Zn plating with a thickness of 8 μm obtained by using the NZ-110 plating solution produced by Deepsol Co., Ltd. were immersed in the following trivalent chromium conversion treatment solution (put the bolts into a basket made of stainless steel stirring in). The treatment temperature was 30° C., and the treatment time was 25 seconds.
[0027] Preparation of trivalent chromium conversion treatment by adding SNOWTEX CXS produced by Nissan Chemical Industries Co., Ltd. as colloidal silica to 100 mL / L of ZT-444A produced by Deepsol Co., Ltd. liquid. The pH of the treatment solution was adjusted to pH 3.0 with NaOH.
Embodiment 3
[0029] Immerse the bolts obtained by using the NZ-200 plating solution produced by Deepsol Co., Ltd. to obtain a zincate Zn coating with a thickness of 8 μm in the following trivalent chromium conversion treatment solution (put the bolts into a basket made of stainless steel stirring in). The treatment temperature was 30° C., and the treatment time was 40 seconds.
[0030] Trivalent chromium conversion treatment was prepared by adding SILICADOL 20AL produced by Nippon Chemical Industry Co., Ltd. as colloidal silica to 75 mL / L of ZT-444DSM1 produced by Deepsol Co., Ltd. liquid. The pH of the treatment solution was adjusted to pH 2.5 with NaOH.
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