Kev kho cua sov ntawm cov yeeb nkab fittings ua ntej thiab tom qab vuam

Kev kho cua sov ntawm cov yeeb nkab fittings ua ntej thiab tom qab vuam

1) Preheating ntawm cov yeeb nkab fittings ua ntej vuam: nws txoj haujlwm yog los txo qhov kub ntawm qhov sib txawv ntawm cov hlau thiab cov hlau hauv paus, uas yog, txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau vuam thiab tshem tawm slag. Thaum vuam cov qauv tseem ceeb, cov kav dej tuab tuab, Chongqing yeeb nkab fittings nrog cov yas tsis zoo thiab muaj zog hardening nyiam, feem ntau yuav tsum tau ua ntej preheating. Cov yeeb nkab yog preheated hauv zos, thiab nws qhov ntev yog ntau tshaj 3 npaug ntawm phab ntsa tuab ntawm ob sab ntawm qhov nruab nrab ntawm qhov vuam; rau cov kav dej uas zoo li yuav tsum tau ua kom tawv los yog ua rau cov kab nrib pleb, qhov ntev yog ntau tshaj 100mm ntawm ob sab.

2) Kev kho cua sov tom qab vuam hauv Chongqing: Nws txoj haujlwm yog txhawm rau txhim kho cov qauv metallographic ntawm cov vuam, tshem tawm cov kev ntxhov siab seem, txhim kho cov tawv tawv ntawm cov vuam, thiab xyuas kom muaj zog. Feem ntau, cov yeeb nkab fittings txais ib nrab tom qab vuam kev kho cua sov, thiab lawv qhov ntev yog ntau tshaj 3 npaug ntawm qhov dav ntawm qhov vuam ntawm ob sab ntawm qhov nruab nrab ntawm qhov vuam.

① Cua sov tus nqi. Tom qab cua sov txog 300 degree, qhov cua sov yuav tsum tsawg dua los yog sib npaug rau 220x25.4÷s degree / h, thiab tsawg dua los yog sib npaug rau 220 degree / h, s yog phab ntsa thickness (mm).

② Lub sijhawm ntsuas kub tsis tu ncua. Phab ntsa thickness ntawm carbon steel yog 2 ~ 2.5min ib millimeter; phab ntsa thickness ntawm alloy steel yog 3min ib millimeter, thiab ntau tshaj los yog sib npaug rau 30min.

③ Txias tus nqi. Qhov txias txias tom qab qhov ntsuas kub tas li yuav tsum tsawg dua lossis sib npaug ntawm 275x25.4÷s degree / h, thiab Tsawg dua lossis sib npaug li 275 degree / h; ntuj txias hauv qab 300 degree.

Kev kho cua sov tom qab vuam ntawm cov yeeb nkab fittings feem ntau yuav tsum tau nqa tawm hauv lub sijhawm tom qab vuam. Yog tias muaj kev kho tom qab kev kho cua sov, nws yuav tsum rov ua kom sov tom qab kho.