Hard chromium electroplating solution for improving wear resistance of guide block of silicon ingot guillotine shear

The invention discloses a hard chromium electroplating solution for improving the wear resistance of a guide block of a silicon ingot guillotine shear. The hard chromium electroplating solution comprises the following components dispersed in water: 280-350 g/L of chromic acid, 2-4 g/L of sulfuric acid, 0.5-1 g/L of fluosilicic acid, 10-30 g/L of potassium fluoborate, 20-40 g/L of chromium trichloride, 10-15 g/L of strontium sulfate, 10-20 g/L of boric acid, 12-20 g/L of magnesium sulfate, 0.5-2 g/L of sodium fluoride and 2-8 g/L of sodium nitrate. The electroplating liquid can greatly improve the wear resistance of the guide block, so that the service life is prolonged, the labor intensity of workers is reduced, the production efficiency of a cutting-off procedure is improved, and the management cost and the production and operation cost of the cutting-off procedure are improved. 本发明公开了一种用于提高硅锭截断机导向块耐磨性的硬铬电镀液，包括分散于水中的如下组分：铬酸280-350g/L、硫酸2-4g/L、氟硅酸0.5-1g/L、氟硼酸钾10-30g/L、三氯化铬20-40g/L、硫酸锶10-15g/L、硼酸10-20g/L、硫酸镁12