Tshaj tawm rau 2018-09-17Dacromet txheej txheej txheej: cov khoom siv raw yog tsim rau hauv cov dej-soluble txheej, thiab tom qab ntawd coated rau ntawm qhov chaw ua haujlwm ua ntej kho, ua ntej ci thiab sintered los ua ib txheej txheej inorganic.Cov txheej txheem yooj yim yog raws li nram no: workpiece degreasing → derusting (blasting) → dip txheej (los yog txau) → ziab → pre-baking → sintering → txias → tshuaj xyuas → ntim.
1. Degreasing: Degreasing organic hnyav los yog alkaline kua deoiling.Los ntawm kev pom ntawm kev tiv thaiv ib puag ncig, alkaline degreasing yuav tsum tau siv.Tom qab lub workpiece degreased, qhov saum npoo yuav tsum tau wetted los ntawm dej.
Lub workpiece yog muab tso rau hauv ib lub thawv kaw, thiab tus neeg saib xyuas yog qhia nyob rau hauv lub siab thiab sprayed rau tu.Txij li qhov saum npoo ntawm cov khoom ua haujlwm yog cov roj ntxhia los tiv thaiv xeb, cov khoom sib xyaw surfactant muaj cov emulsified dispersion thiab lub zog zoo dissolving yog xaiv.
2. Kev txhaj tshuaj blasting: Yuav kom tsis txhob muaj hydrogen embrittlement thiab ib puag ncig muaj kuab paug, xeb tsis yog siv rau pickling, tab sis txhaj tshuaj blasting yog siv.Cov hlau txhaj tshuaj peening tshuab siv nyob rau hauv lub tshuab txhaj tshuaj blasting muaj ib txoj kab uas hla ntawm 0.1 mus rau 0.6 hli, thiab yog plua plav los ntawm compressed cua.Cov plua plav tshem tawm yog sau los ntawm ib qho tshwj xeeb plua plav collector thiab concentrated.Degreasing thiab descaling yuav tsum tau meej, txwv tsis pub lub adhesion thiab corrosion kuj ntawm lub txheej yuav raug txo.
3. Dip txheej: Lub workpiece kho yog immersed nyob rau hauv pre-formulated Dacromet txheej tov.Lub workpiece feem ntau yog dip coated rau 2 mus rau 3 feeb nyob rau hauv me ntsis co thiab ces qhuav.Yog hais tias lub workpiece loj, tshuaj tsuag nws.Tom qab dip txheej los yog txau, yog tias muaj qhov tsis sib xws los yog txheej txheej tom qab kuaj xyuas, nws tuaj yeem siv los ntawm txhuam txheej.
4. Pre-baking, curing: Lub coated workpiece yog muab tso rau ntawm ib tug stainless hlau mesh siv, thiab cov workpieces tsis pub mus rau ib leeg, nkag mus rau lub sintering rauv rau 10-30 feeb, thiab kho rau 15 mus rau 30 feeb.Lub pre-ci, curing kub thiab lub sij hawm yog tsuas yog txiav txim los ntawm lub thickness ntawm lub txheej thiab qhov luaj li cas ntawm workpiece thiab cov sib txawv txheej kua.Lub conveying ceev ntawm stainless hlau mesh siv conveyor yog tswj.
5. Kev kho tom qab: Yog hais tias qhov saum npoo ntawm lub fastener yog ntxhib tom qab kho, qhov saum npoo ntawm fastener tuaj yeem ntxuav nrog txhuam tawv.
Post lub sij hawm: Jan-13-2022