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Butterfly valve plate of the casting process double-sided design

# 215; 60 (mm) production-proven, top of the drum parts rain pouring system is appropriate, this ratio of the gating system design element size in each group is correct and feasible, especially within the runner section and section runner-phase casting process diagram of Figure 2 near, reducing the pressure of fluid within the runner to prevent the liquid metal into the cavity when the spray valve. 2. 2 ■ Port Settings and size to the top of the rain pouring molten iron coagulation system has a good temperature distribution,[link widoczny dla zalogowanych], casting a certain degree of self-feeding, appetite, feeding only from the difference between feeding less. Select the top ring appetite, both for feeding and set residue, and as technology increases head. Appetite thickness of the top 71. 5mm (same size and thickness of the flange), height of 160mm cavity to make pouring the gas discharged in time, open side of the riser 30 × 60mm. Used when pouring pool-shaped gate gate Cup. Leakage of molding with the successful production of a double-sided disc valve castings. Figure 1 Structural diagram of a two-sided with the board design of drain leakage mode shape molding process scheme shown in Figure 2, sub-surface selected in the center of the disc. As a result of leakage mode, the actual thickness of the model greatly improved, the actual operation, twenty good quality plywood, based on the aspect of its operation changed the wrong adhesive material, to model entities, and install the appropriate pins # false Twenty bottom plate also used plywood,[link widoczny dla zalogowanych], two-sided in its fixed installation on the gate, several pins can be fitted. This approach was a reasonable model of the thickness of thick, to avoid the model selection process advanced materials and complex production process diagram in Figure 2 mold leakage effect of the above process 2 to make use of the model, because the actual thickness of the thickening. Deformation strengthening, the model life greatly improved. Shape, it will be false bottom plate in a type of board. Cone and fixed by positioning the false bottom plate fixation pins. Then the model type with the pins fixed to the board, after the sub-surface shape formation,[link widoczny dla zalogowanych], cavity shape and size accurately. Several groups of castings test results show that using the technology out of the valve plate casting,[link widoczny dla zalogowanych], shape, dimensional accuracy and surface quality are. Acres of important parts of a valve - the valve plate (Figure I), because the overall minimum wall thickness is only 4 ~ 15mm, the difficulties caused by sub-type, (I am using the Japanese introduced VRH.CO: vacuum hardening law model), location pin can not be installed, resulting in the valve plate deformation, dislocation and other defects,[link widoczny dla zalogowanych], the casting shape, size precision can not be guaranteed. To this end, we have been trial and error, and finally taken out the local stress of the gear plane warping correction method. Works well. Figure l is BJl30 cone driven gear rear axle. 20CrMnTi steel using direct quenching after carburizing, hardness of teeth required 58 ~ 64HRC. T surface roughness after heat treatment requirements of the outer ring on the platform at 0.1mm thickness inspection regulations shall not pass. Inner ring at 0. 2mm thickness regulation shall not pass. After a plane warpage of the gear have to check the classification is divided into two categories: convex deformation of the heart (Alice outside the tolerance, the Alice passes), two \
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