High Quality Head Rotor 146405-4220 Pump Parts Diesel Engine Parts Diesel Pump Fuel Head Rotor

Experimentally study the feasibility of single row of holes in the pump head body gasket treatment structure and process. In the conventional heat treatment process of the pump head, the stress concentration at the internal cross coherent holes cannot be completely eliminated, and in serious cases, cracks may be generated, which ultimately leads to the scrapping of the pump head and directly causes economic losses. Although according to the heat treatment process needs, in this place to increase the R3Inlrn rounded corners, but the actual production of the process requirements can not be guaranteed. In order to improve the shortcomings of the traditional heat treatment process, the pump head body material samples, try to cancel the cross-hole, using a single row of holes heat treatment structure, and check the internal area of the mechanical properties of the material and the microstructure, for the continuation of the improvement of the process to provide a reference! 

Pump head body (also known as valve box) is the main part of hydraulic end of oilfield cemented fracturing plunger pump, which is generally made of large high-strength alloy steel forgings and tempered because of the high pressure (about 90MPa) it is subjected to when it is working, and has high requirements for strength and reliability.

Traditional pump head body heat treatment blank internal design with cross coherent holes, its coherent line at the quenching of the formation of thermal stress and organisational stress is more hazardous but can not be completely eliminated, resulting in actual production of blank quenching cracking scrap, and cause direct economic losses; in addition to the residual heat treatment stress can be formed with the pump head body internal high pressure superposition of the centralized stresses lead to the pump head body cracked in advance, shortening the service life of the pump head body. Therefore, the heat treatment structure of the coherent holes must be modified, considering the cancellation of a set of holes, the use of a single row of holes heat treatment structure, but the reduction of a row of holes means that the quenching fluid passages are reduced, the forging can be quenched through is questioned.