Txheej txheem cej luam ntawm Valve Casting

1. Dab tsi yog casting

Cov hlau ua kua tau hliv rau hauv cov pwm kab noj hniav nrog cov duab haum rau ib feem, thiab tom qab nws solidifies, loj yog tau, uas yog hu ua casting. Peb lub ntsiab tseem ceeb: alloy, ua qauv, pouring thiab solerification. Qhov txiaj ntsig loj tshaj plaws: Cov ntu nyuaj tuaj yeem tsim tau.

2. Kev loj hlob ntawm casting

Kev tsim pib pib thaum xyoo 1930 siv pneumatic tshuab thiab av nplaum av xuab zeb sand ua.

CEMENAS SAND HOM tshwm nyob rau hauv 1933

Xyoo 1944, lub zog txias txheej cob siav xuab zeb txiav hom tshwm sim

Co2 Hardened Dej Iav Cov Pwm Pwm Cov Pwm Puas Ntawm Xyoo 1947

Xyoo 1955, Lub Thermal Txheej Resin Xuab Zeb Pluag Hom tshwm sim

Xyoo 1958, Furan Resin tsis muaj-ci xuab zeb pwm tshwm

Xyoo 1967, Maas ntws xuab zeb pwm tau tshwm sim

Hauv xyoo 1968, dej iav nrog cov organic hardener tshwm

Hauv 50 xyoo dhau los, cov qauv tshiab ntawm kev ua cov pwm tuaj pwm, xws li: Sib Nqus Pelling Txuj Ci, thiab lwm yam Casting Cov Qauv raws li cov pwm pwm. Xws li centrifugal casting, kev muaj siab ci, tsis tshua muaj siab, kua extrusion, kua extrusion, thiab lwm yam.

3. Cov yam ntxwv ntawm casting

A. Dav tau yoog thiab hloov tau. Txhua cov khoom siv hlau. Casting tsis yog txwv los ntawm qhov hnyav, qhov loj thiab cov duab ntawm ib feem. Qhov hnyav tuaj yeem yog los ntawm ob peb grams rau ntau pua tus tons, phab ntsa tuab tuaj yeem yog 0.3 hli rau 1m, thiab cov duab tuaj yeem yog cov khoom muaj ntau.

B. Feem ntau ntawm cov ntaub ntawv nyoos thiab cov ntaub ntawv tso tawm tau siv tau dav tsoom thiab pheej yig, xws li seem hlau thiab xuab zeb.

C. Cov kab hlau tuaj yeem txhim kho qhov raug thiab qhov chaw zoo ntawm cov khoom siv tshuab ua kom tau txais tsawg dua thiab tsis txiav.