铝合金与不锈钢大气钎焊性的改善——铝合金与不锈钢焊接技术(二)

在基本查明铝合金与不锈钢焊接困难原因的基础上,参考钎料对纯铝等温凝固过程的数值解析以及熔融钎料层消失时间的推定及试验结果,探讨了解决对策.采用电阻炉、TCM10000万能试验机进行了钎焊接头改善及评价试验,以此为依据提出了改善铝合金与不锈钢钎焊性的新焊接方法,即增大钎焊间隙实施钎焊的方法;预先使钎料对不锈钢产生润湿,然后再与铝合金实施钎焊的方法.又采用上述方法进行了其它形状部件的制作,从理论到实践验证了新焊接方法的可行性.     

A THEORETICAL STUDY ON ADAPTIVE QUALITY CONTROL SYSTEMS

This paper is a study of an adaptive quality control system from a viewpoint of quality goal. The main purpose is to introduce a conceptual framework for setting up quality goals which are in accordance with the external environment and internal capacity of quality control systems. We apply a mathematical general systems approach.

The results of our paper are summarized as follows:

1)As important decision-making in adaptive QCS, the decision-making for estimalion of fitness and examination of attainability are proposed and formalized mathematically.

2)A refinement process is formalized in which models are revised according to the changes of market.

3)Basic steps for setting quality goals are obtained which are based on the above formalization.