Self-drilling screws yog qhov tseem ceeb ntawm cov khoom siv tshuab nrog kev thov siab. Lawv feem ntau yog siv rau hauv bolts, screws, rivets, thiab lwm yam, rau kev nyab xeeb los yog nyob rau hauv ib puag ncig hnyav los yog lwm yam kev phom sij uas qhov kub thiab txias tsis muaj kev txhawj xeeb.
Cov khoom siv dav siv rau tus kheej drilling screws muaj xws li carbon steel, low-alloy steel, thiab non-ferrous hlau. Txawm li cas los xij, hauv cov ntawv thov tshwj xeeb, cov ntaub ntawv fastener yuav tsum tiv taus corrosion hnyav lossis siab zog, ua rau kev txhim kho ntau yam stainless hlau thiab ultra-high-strength stainless hlau.
Cov ntsiab lus hauv qab no yuav tsum tau muab sau tseg thaum siv thiab tswj tus kheej-drilling screws:
1. Cov txheej txheem rinsing rau tus kheej-drilling screws yog qhov tseem ceeb thiab yuav tsum tau ua tib zoo saib xyuas, vim tias cov khoom seem yuav nyob ntawm qhov chaw. Rinsing yuav tsum tau ua tom qab ntxuav nrog ib tug silicate tu tus neeg saib xyuas.
2. Self-drilling screws yuav tsum tau stacked kom zoo thaum tempering; txwv tsis pub, me ntsis oxidation yuav tshwm sim hauv cov roj quenching. 3. Lub xub ntiag ntawm cov phosphide residue nyob rau saum npoo ntawm cov ntsia hlau uas muaj zog heev qhia tias tsis txaus siab rau kev nthuav dav thaum kuaj xyuas (point 1).
4. Blackening ntawm qhov chaw qhia tias muaj tshuaj lom neeg cov tshuaj tiv thaiv, qhia txog kev kho cua sov tsis tiav thiab tshem tawm tsis tiav ntawm alkaline residues.
5. Kev xeb tuaj yeem tshwm sim ntawm cov qauv txheej thaum yaug; cov dej yaug yuav tsum tau hloov tsis tu ncua.
6. Kev xeb ntau dhau qhia tias cov roj quenching tau siv ntev dhau lawm thiab yuav tsum tau hloov cov roj tshiab.
