The improvement of pressing plate foundry technology

The improvement of gating system pressing plate former technology is used enclosed gating system, press the craft principle that coagulates to machine look out to fall with manage treat of at the same time, will whole cast is put in next box, if pursue,2 are shown. The new technology program after improving abides by balanced and caky theory to design gating system, actual to the job of pressing plate condition undertakes an analysis, the decision installs cast entirely in top part, won't affect its performance characteristics and quality, if pursue,3 are shown. Original plan horizontal runner uses flat echelon, inside runner is thick and narrow and be located in next box, be helpful for current of high temperature iron entering casting mould, win compact and eligible cast thereby. But on cast two strip aperture that do not machine and sunken antrum, cannot use sandbox condole arenaceous implementation, reason whole model antrum makes arenaceous core of a similar cover board, and because wide and arenaceous core is small, wet intensity is low, use dry core so. Additional, need to join core iron to increase strength, but core box structure is complex, the cost that make is high, volume is large and use very arduous; New technology basis is balanced and caky academic, tall echelon of horizontal runner instead, inside runner is flat and thin, dimension is shown 4 times like the graph. The horizontal runner of tall echelon more be helpful for blocking broken bits, flat and thin inside runner won't produce overheat, and exterior accumulating is big, medicinal powder heat is fast, first at cast caky, the metallic fluid that can prevent cast is passed inside runner undertakes turning over filling to horizontal runner, prevent to produce depression phenomenon. Compressed inside runner current is small, won't produce jet, also won't be opposite model antrum generation is fierce erode. 2.

The improvement of modelling plan is new craft puts cast and gating system in top part, next box are comprised by the sand mold that forms sunken antrum and two small the forked tongue of a snake. Additional, a new technology will be original big core, instead bulk two fuse with small, simple appearance, do not need to go up kiln drying, when the province, save labour, if the graph is shown 5 times,arenaceous core of new, old technology contrasts. Going up as a result of cast model in, wall of cast end face is large big, caky slow, aeriform concentration, easy generation enrages aperture and depression blemish, be aimed at this problem, install rising head of exhaust of two ψ 10mm. Above all, it can mix the gas inside casting mould enter first model the eduction of Leng Tie fluid inside antrum, keep whole model the temperature of antrum is even, extended caky time relatively, be helpful for winning eligible cast; Next, the cast with mural large bigger difference, the surface that is in center of large wall ministry forms the incrustation that has particular strength harder, insert steam vent but thickening large center writtens guarantee quickly housing, get do not have shrinkage cavity cast thereby. 3.

Investment of epilogue new technology is little, alter small, but the effect that has get twice the result with half the effort however, improved productivity, reduced labor intensity of the worker, quality of the product in be being produced in last few years is stable, this plan gets affirmation. CNC Milling