The Development And Research Of Nickel Base Alloy Bar And Wire

The thesis mainly talks about the technics in production of supperalloy (GH3030, GH1140) and corrosion resistance alloy(NS311,NS312,NS333). It contains that compounding, refining, casting and deformation, such as forge, rolling and wortle. In order to improve the quality of the alloys, we take some measures in improving the technics and utilizing the method of electro-slag remelting.The thesis makes its emphasis on good quality with the methods of refining and hot processing of metal respectively. We can get the ideal liquid by taking the controlling of the change of temperature strictly and analysing the content of elements frequent and precise.During the process, we must take the controlling of the order of the input of materials strictly and obey the rules. In order to improve the purity of the liquid, we must cover the slag in time and test temperature frequently. Proper speed of casting speed can assure the good quality.The purpose of heating is that we can get the good ingot which on the one hand is heating enough; the other is granular. As we all know that the interval that fits for large deformation is narrow, and so it's important for us to control the temperature strictly. NS311 and NS312 are easy to be made for their simple composition; otherwise supperalloy is diffcult especially for GH1140 that contains high melting point elements and NS333 which contains 16% Mo, so we need to control the temperature and time strictly. In order to get fine microstructure, we should follow some forging rules that assure we can make it properly. The quality can be affected by coping. We need revolution wortle equipment, soda soap and calcium soap to do wortle. The results tell that the production is coincidence with national standers and which can be used wildely at factory.We try our best to do some improvements as above.