Quality Control a ni

Handan Dongchao Hardware Products Co., Ltd.-ah chuan quality control hi production stage tinah dahkhawm a ni a, raw material sourcing atanga final shipment thlengin a inzawm khawm a ni.

Kan thil tum ber chu specification zawm thei fastener siam mai ni lovin, hun rei tak-term supply project leh distribution customer te tana production batch inkara inmilna vawn reng a ni.

Production order tin hian quality risk tihziaawmna tur leh product rintlakna tihchangtlun nan structured inspection process an zawm vek a ni.

Fastener quality hi a raw materials quality atanga tan a ni.
Production tan hmain incoming wire rod leh steel materials te enfiah a ni a, hei hi a dik leh dik loh enfiah thin a ni:
• Material grade a ni
• Diameter tuar thei
• Lei chunglam dinhmun
• Mechanical lama thil awm dan
• Supplier te documentation te chu a hnuaia mi ang hian a ni

Thil siam chhuah mamawh phuhruk lote chu isolated a ni a, siamna kawngah a luh loh nan an khap a ni.
Hei hian a hnu lama forming, threading, leh heat treatment operation zawng zawngah performance nghet tak neih theihna turin a pui a ni.

Thil siam chhuah chhung hian key production stage-ah dimensional inspection neih thin a ni.
Inspection thilte chu hetiang hi a ni thei:
• Lu diameter a ni
• Lu san zawng
• Shank diameter a ni
• Product sei zawng
• Point geometry hmanga thil tih dan
• Thread siam chhuah

Production operator leh quality inspector te chuan thil siam chhuah chhung zawngin product dimension an enfiah a, tam tak siam chhuah hmain deviation an hmuchhuak thin.

Thread quality hian fastening performance leh installation efficiency a nghawng nghal vek a ni.
Thread endiknaah hian tehna hmanrua leh thread gauge hmangin:
• Thread pitch a ni
• Thread thuk zawng
• Thread angle a awm
• Thread a inmil thei
• Fit dikna

A bik takin self-drilling screw leh self-tapping screw te hi ngaihven a ni a, chutah chuan installation laiin thread performance a pawimawh hle.

Heat treatment mamawh product tan chuan hardness testing hmangin mechanical performance an enfiah thin.
Inspection-ah hian:
• Core khauh tak a ni
• Lei chunglam khauh lutuk
• Heat treatment a awm dan tur

Hardness control dik tak hian chakna tling tak a awm theih nan a pui a, chutih rualin installation laiin cracking emaw brittleness emaw a awm theihna a ti tlem bawk.

Product chi leh customer mamawh dan azirin mechanical testing-ah hian:
• Tensile chakna test a ni
• Torque test neih a ni
• Pull-out testing neih a ni
• Shear hnathawh dan tehna

Heng test-te hian thil siamte chuan sakna, steel structure, leh industrial assembly-a hman tur mamawh a tlin leh tlin loh finfiah nan a pui a ni.

Surface coatings hian corrosion resistance leh service life-ah hmun pawimawh tak a chang a ni.
Inspection neihna tur thilte chu:
• Coating hmel lan dan
• Coating coverage a awm thei
• Lei chunglam chhiatna
• Coating a inmil thei

Surface treatment awm thei te chu:
• Zinc hmanga siam a ni
• Hot dip hmanga galvanizing a ni
• Black oxide a awm
• Ruspert hmanga khuh a ni

Customer specification angin coating verification dang pawh ruahman theih a ni.

Packaging leh shipment hmain thil siam zawh tawhte chu final inspection neih a ni.
Inspection kalpui danah hian:
• Product dimension hrang hrang
• Product awm dan tur
• Packaging tihchian a ni
• Label tihchian a ni
• Quantity tihdikna

Final inspection paltlang product chauh shipment atan tihchhuah a ni.

Hun rei tak-supply project leh customer quality management mamawh te thlawp turin, production batch te chu siam chhuah chhung zawngin record a ni.
Traceability record-ah hian:
• Raw material atanga lo chhuak a ni
• A siam chhuah hun tur
• Machine record te
• Enfiahna record te
• Thil thawn chhuah record te

Hei hian a tul hunah production information enfiah theihna a siam a, hun kal zelah quality consistency tihchangtlunna kawngah a pui bawk.