1 Pump body materials, structural characteristics and requirements The annual corrosion rate of zirconium is less than 0.05 mm, and it has excellent resistance tocorrosive, and zirconium materials are less likely to absorb hydrogen than other applicable materials.Sensitive and therefore more suitable for chemical reaction conditions of high temperature...
Based on the simulation and optimization scheme under the virtual conditions, according to the process planning route, the mold is actually made. The core is made of coated sand, the sand core is solidified, dipped and dried, the static molding line is used for clay sand molding, and the...
Based on the above comprehensive evaluation of the casting process plan, the casting simulation software is used to simulate the casting and solidification process after modeling, and various boundary conditions and heat transfer coefficients are set according to the actual conditions. There are many inner sand cores, and the...
1) Gating system design According to the above parting surface and sand core of ductile iron castings, the gating system, except for the vertical runner, the transverse runner and the inner runner are distributed above and below the parting surface. The inner runner is connected with the riser of...
According to the above casting process analysis and site production conditions of the foundry, the casting process route is determined to be: static pressure line clay sand molding, using hot core box to make sand core, medium frequency furnace melting molten iron casting, external shot blasting and internal cavity...
Preset the machining allowance in the customer’s part drawing, reserve the castable hole that is convenient for the fixation of the sand core, for the exhaust of the sand core, and for the sand discharge of the casting sand, and conduct the moldability analysis of the internal oil channel...
The engineering plunger pump is the key component of the hydraulic system of construction machinery. During the operation of the plunger pump system, the pump cover repeatedly bears the pressure of alternating load, so the pump cover casting must be compact and zero leakage. The shape of the new...
Since the external characteristics of casting defects are characterized by porosity, the following measures have been taken: (1) Reduce the gas generation of sand core. Extend the core baking time of the main core for 1 hour, the gas generation of the main core will decrease from 14.5 mL/g...
1. Modeling and core making process The sand-coated iron molding process is adopted, with the thickness of the sand-coated layer of 6~8 mm and a box of two pieces. The appearance is coated sand with low gas generation (gas generation is less than 14 mL/g). The core is made...
Pump and valve products are widely used in petroleum, chemical industry, hydropower station, nuclear power station and other fields. For different working conditions, different material grades need to be selected, such as CF8, CF8M, CF3, CF3M and other 18-8 stainless steel materials, which are widely used due to their...