Cov txheej txheem tsim ntawm cov ntsia hlau feem ntau suav nrog tsib kauj ruam tseem ceeb: kev npaj xaim, lub taub hau txias, xov dov, kev kho cua sov, thiab electroplating. Tag nrho cov txheej txheem yog automated heev thiab yuav tsum tau siv technology meej.
Kev npaj thiab kho cov hlau: Kev tsim khoom pib nrog kev xaiv cov hlau tsim nyog (xws li carbon steel lossis stainless hlau), feem ntau nrog txoj kab uas hla ntawm 5-19 hli. Ua ntej, spheroidizing annealing yog ua los txo cov hardness thiab txhim kho plasticity, ua kom yooj yim rau kev ua haujlwm tom ntej. Tom qab ntawd, txheej txheej oxide saum npoo raug tshem tawm los ntawm pickling lossis mechanical descaling, ua raws li kev kho phosphating thiab saponification los txhim kho lubricity thiab hnav tsis kam.
Cold Heading: Cov hlau yog muab tso rau hauv lub tshuab taub hau txias, qhov chaw uas nws tau stamped ntawm kev kub ceev los ntawm kev tuag ntawm chav tsev kub, tsim cov qauv ntawm cov ntsia hlau taub hau thiab shank hauv ib kauj ruam. Cov kauj ruam no txhim kho kev siv cov khoom siv thiab ua kom muaj zog.
Xov Rolling: Siv ib qho kev txav mus los thiab lub phaj ruaj khov, lub siab yog siv rau qhov txias - taub hau dawb paug, ua rau cov yas deformation ntawm cov hlau nto los ua cov xov. Muab piv rau cov xov txiav, xov dov txhim kho xov lub zog thiab txo cov khoom pov tseg.
Kev kho cua sov: Txhawm rau txhim kho hardness thiab toughness ntawm screws, kev kho cua sov yog tsim nyog. Cov txheej txheem dav dav suav nrog:
Cleansing nto roj
High -kub carburizing (rau siab - lub zog screws)
Quenching thiab hardening
Tsawg-kub tempering los txo cov kev ntxhov siab sab hauv thiab tiv thaiv kev puas tsuaj.
Cov txheej txheem no yog qhov tseem ceeb tshwj xeeb rau siab - lub zog screws ntawm qib 8.8 thiab siab dua.
Electroplating thiab Surface Treatment: Thaum kawg, zinc, npib tsib xee, lossis lwm cov txheej hlau yog electrochemically plated rau ntawm cov ntsia hlau saum npoo los muab kev tiv thaiv xeb thiab xeb thiab txhim kho cov tsos. Ib puag ncig tus phooj ywg electroplating kuj ntxiv ib zaj duab xis passivation, ntxiv txhim kho corrosion kuj. Tag nrho cov txheej txheem yuav siv li ntawm 1.5 mus rau 2 teev.
