Forging manufacturer's forging and forming process solutions for valve bodies
Forging manufacturer's valve body is a key component in the petroleum equipment gate valve, according to the pressure level has different forming methods, such as: forging, forging, etc.. Valve body material for different processing process material, using different types of raw materials, common materials are: pig iron, cast steel parts, stainless steel plate, alloy tool steel, etc.. Valve body forging is divided into press free forging and electro-hydraulic hammer free forging, the key marketing products in the text according to the free forging forming, analysis of a more diverse processing technology program, after arriving at an ideal valve body forging forming processing technology.
Forging manufacturer's forging valve body forging process planning
Forging manufacturer's valve body on both sides for flange look, is the middle position of the left and right 2 symmetrical round convex die, two convex die in the middle of the irregular graphic design scheme, forging links to allow appropriate collapse. The integrated design is an eccentric wheel structure, the raw material is cast steel parts, the product material is AISI4130. The net weight of the commodity parts is 1050kg, because the forging size is large, the common cast steel parts ingot shape is also very large. In order to ensure that the core of the cast steel parts forging through, internal structure inclusions, mesh structure crystalline bodies can be effectively destroyed, loose and other shortcomings can be effectively welded together, should be manipulated forging ambient temperature zone. Forging temperature is high, the cast steel internal structure shortcomings will be easier to forge together, and thus should be maintained at high temperatures to carry out forging.
Forging forgings with cast steel parts, we must consider the forging ratio, forging factory valve body forging billet basically forging the whole process into forging ratio control and forging billet forming. According to the forging machine forging capacity and forging material specifications choose 6t rotary cylinder, heating equipment choose natural gas furnace, forging raw material forging temperature of 1180 ℃, the final forging environment temperature of 850 ℃, forging cooling method for the pit cold.
Forging valve body processing technology program
Because the forgings look complicated, the overall forging difficulty is high, according to the characteristics of the parts, our processing staff and forming feasibility analysis, integration of our specific production conditions, research and deployment of three valve body forging forming processing technology program.
Option 1
Immediately forged into a lattice embryo, specifications 492mm × 657mm × 915mm, through the forging after cooling, scribing on the forging blank, the final sawing angle on the CNC sawing machine.
Scheme 2
First forged into articulated lattice blanks, forging square cross-section of 510mm x 690mm, to ensure that the positive middle lattice key size, with stainless steel rods on both sides of the billet to carry out embossing, to embossing parts based on the use of chopper to carry out human division of material, and then press the shoulder to pull the length, and then the forging billet into the valve body grinding tool for surface shaping beauty, followed by the valve body on both sides of the face to carry out leveling, after the blanks formed into three sections of square body.
Option 3
The embryo will be forged into a cylindrical shape, cross-sectional circle diameter of φ480mm, and then the upper and bottom sides of the embryo will each be wrapped with a grinding tool ring, upsetting along the forging billet axis direction, when the middle forging square to reach the process size, and then the forging billet and grinding tool ring placed horizontally on the hammer anvil, forging the embryo axis force structure. At the end, the two sides of the abrasive ring will be removed, the embryo to carry out the leveling solution to ensure that the forging process size and surface quality of the forging meet the requirements.
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