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Low-pressure casting

It refers to the cas靜化ting method that t樂嗎he mold is generally pla作師ced above the sealed 行秒crucible, and the crucible is filled w雪北ith compressed air,在光 which causes low pressur物雪e (0.06-0.15MPa) on the surf大雨ace of molten metal, so坐唱 that the liquid metal rises fro技草m the riser to f司車ill the mold and control the 一公solidification. With good shri有人nkage and compact casting structure習船, this ca......
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It refers to the casting method that用房 the mold is generally placed哥地 above the seale還街d crucible, and the crucible is f科服illed with compressed air, wh老間ich causes low pressure日現 (0.06-0.15MPa) on the surface of mo裡水lten metal, so 校亮that the liquid metal rises from the ri事可ser to fill the務工 mold and control th林亮e solidification.月離 With good shrinkage and compact cas時我ting structure, this cast到短ing method is easy to cast紙爸 large and complex thi兒西n-walled castings without ri快事ser, and the metal yield i計相s up to 95%. No pollution is 對村generated, and it is 開器easy to realize autom制門ation. However, the equipment cost i明照s high and the produ腦民ction efficiency 你紙is low. It is generally used for castin區技g non-ferrous alloys.

● Principles

Low-pressure casti理見ng is a casting method that 上農the liquid alloy is pressed in區關to the mold cavity from bottom to to市們p under pressure and 街藍solidified under pressure to obta飛雪in castings. The principle of low-pr說來essure casting is shown in F船長igure 1 Principle of Lo湖農w Pressure Casting算拿. The sealed crucible門遠 is filled with dry co關火mpressed air or inert gas. With the he大地lp of the pressure acting on 道女the metal surface, the molten met笑的al is filled with the mold smoothly fro為器m bottom to top along the riser thro她厭ugh the runner. The f房行illing pressure is generally 20-60kPa.可靜 When the casting is completel謝件y solidified, t那友he gas pressure on th快對e liquid surface is relea兵得sed, so that the metal liquid without歌大 solidification in th土請e riser pipe and r服河unner flows into th身年e crucible by i微作ts own weight, and then坐會 the cast is opened and the casting i樹煙s removed.

 

低壓鑄造

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