[发明专利]黑色硬铬化学镀液及生产方法

权利要求书

1.一种黑色硬铬化学镀液，其特征在于所用原料质量百分比如下：

                  铬酸酐                                                         60~70%

                      硝酸铬                                                        0.5~1.5%

                      硝酸                                                            0.2~0.6%

                      氟化钾                                                        0.2~0.6%

                      硼酸                                                           0.5~1%

                      碳酸钡                                                      0.5~1%

                      酒石酸钾钠                                                0.5~1%

                      水                                                                余量。

2. 一种如权利要求1所述黑色硬铬化学镀液的生产方法，其特征在于按如下步骤进行：将计算称量的水加入到反应釜中，加温到45℃，开动搅拌器控制转速60转/min，再将计算称量的铬酸酐、硝酸铬、硝酸、氟化钾      、硼酸  、         碳酸钡及酒石酸钾钠依次加入到反应釜中，边加入边搅拌至混合均匀，待溶液温度降到室温时，放料包装。