The Applied Technique Of The Union Joint Of Fe-based Memory Alloy Studies In Oil Field

The corrode of Three Yuan compound drive the extraction to pour into the fluid is extremely seriously, therefore Da qing does the inner antisepsis being encircled by the oxygen powder series generally on pipeline driving an oil extraction in Three Yuan compound. The steel tube of inner flame plating that be encircled by the oxygen powder series can resist machinery wear and have the chemistry stability highly and have corrode as well as water of heat resistance easy to acid proof and to be able to bear an alkali and to be able to bear salt and be able to bear and resisting a microorganism to wait for outstanding being able to bear to corrode a function in the process of usage, But the problem of filling up the mouth is not getting very good solving so far in the homeland. At present Be encircled by the oxygen powder inner flame plating in the homeland the steel tube help Certain common differenceThis method is not a high accuracy in reaming and restrict in the environment being under construction and condition that the disaster achieves the desired results very much. Inner of high temperature is very easy to dock a place to the steel tube coating creation destroys welding because the operation is complicated and Asbestus rope heat insulation effect. Change in the area metallographic organization fever of arousing is affected and the remaining strain arouse strain corroding a dehiscence to create inner steel tube bringing about the ring oxygen powder series falls short of success. Carrying out a certificate is not a preferred plan. Because Fe-based shape memory alloy have a good shape memory effect, and have a high strength, and have a high plasticity, and fit field work because of having a safety about not leakage and processing easily .Be aimed at this condition, We take the Fe-based memory alloy to apply pipeline Linkup assembled at the Three Yuan compound drive in Da qing. At the same time it has filled in one blank space about adding supplemental the mouth technology in china.The paper has mainly studied the principle of Fe-based shape memory alloy. The effect and mechanism of the Fe-Mn-Si alloy shape restoration rate, consist of the Quenching handicraft, the train of hot machinery circulation, the anneal temperature of returning, And the length and thickness of union joint.The paper carried analysis of the metallographic organizes about the Fe-Mn-Si union joint that after heat restoration. It further proves the mechanism of shape memory effect.The paper carried drawing test of union joint which is jointed on omnipotent testing machine. And calculate the size of fastening force, it play an active role about reliability of the union joint binds and installation.The paper carried study analysis the affect of hermetic sealing function and the function linking up to the Fe-Mn-Si alloy union joint, because of expand footpath rates , coordinate a gap , glue and splice the agent formula through the experiment at laboratory and the fourth oil extraction factory. And reached animportant conclusion to the need of satisfy project.