Qhov sib txawv ntawm cov high-zog bolts thiab bolts dog dig

Hauv kev thov engineering,Carbon-steel fastenerstau faib ua ob pawg: high-zog bolts thiab bolts dog dig. Thaum stainless-steel bolts (sus304 / sus31 / sus316) muaj cov khoom siv sib txawv ntawm cov khoom siv, carbon-steel bolts feem ntau tsis to taub. Cov kab lus hauv qab no tau txheeb xyuas lawv qhov sib txawv ntawm cov khoom siv, kev tsim khoom, thiab kev xav ua tau zoo.

I. Cov Khoom Siv & Tsim Kev Tsim Khoom

1. Kev Loj-Zog Bolts

 

Ntaub ntawv:

Cov hlau me-carbon hlau (45 #, 35 #)

Alloy Hlau (40crmo, 35CRMO)

Cov txheej txheem tseem ceeb:

Quenching + Tempering (cov qauv tembite sorbite)

Nto Kho (piv txwv li, Zinc plating nrog lub dehydrogenation)

Cov menyuam kawm qib:

8.8: 45 # steel quenched thiab tempered

10.9: 40clo alloy quenched thiab tempered

12.9: 35Crmo alloy quenched thiab tempered

2. Qiv Bolts

 

Ntaub ntawv:

Tsawg-steel hlau (Q235, A3)

Cov Hlau Me (10 #, 20 #)

Cov txheej txheem tseem ceeb:

Cleading Tuav Sib Sau

Yooj yim saum npoo kho (piv txwv li, blackening)

Cov menyuam kawm qib:

4.8: Q235 Txias-Tsim

5.6: 10 # txias-tsim

6.8: 35 # no

Ii. Neeg kho vaj tsev sib piv

 

Ntiag tug	High-zog (8.8)	Dog dig (4.8)
Lub zog tensile	Ntau dua los yog sib npaug rau 830 MPa	Ntau dua los yog sib npaug rau 400 MPa
Paib lub zog	Ntau dua los yog sib npaug rau 660 MPa	Ntau dua los yog sib npaug rau 240 MPa
Elongation	Ntau dua los yog sib npaug rau 12%	Ntau dua los yog sib npaug rau 22%
Hardness (HRC)	24–31	12–18
Qaug zog	450 MPa	200 MPa

III. Daim Ntawv Thov Kev Pab Cuam

Cov Kev Siv High-Dag Zog

 

Kev tsim qauv kev lag luam:

Choj txuas (M20-M30)

Hlau Rho Pob Qaib (Twist-Off Hom Bolts)

Cov Machinery hnyav:

Cua TurbineTHAUJ TOG RAU NKOJ BOLTS (M36+)

Siab ntshaaub kaw (B7 Qib)

Cov Kev Siv Zoo Nkauj

 

Dav dav nrawm:

Rooj tog sib dhos (M6-M10)

Cov yeeb nkab clamps (galvanized)

Siv ib ntus:

Kev Tsim Kho Kev Tsim Kho

Automotive sab hauv fittings

IV. Kev txheeb xyuas & kuaj

Lub taub hau cim

 

High-zog: Qib Cim (piv txwv li, 8.8, 10.9)

Dog dig: feem ntau tsis ncaj ncees lossis nrog cov chaw tsim khoom logos

Kev Xeem Yuav Tsum

 

High-zog:

Kev Kho Cua Sov Cov Ntaub Ntawv

Cov Ntawv Pov Thawj Thauj Khoom Kuaj

Hydrogen Test

Dog dig:

Xov Tag Nrho Kev Soj Ntsuam Xyuas

Zinc Txheej Wickness Ntsuas

V. Cov ntsiab lus tsis ntseeg

 

Khoom Txhais Lus: Cov pa roj carbon ntau ib leeg tsis tuaj yeem lav lub zog siab. Qhov tsim nyog kho cua sov yog qhov tseem ceeb.

Qeb Kev Ua Tsis Zoo: 8.8 qib yuav tsum tau tsawg kawg 830 mpa tensile lub zog, tsis yog alloy cov ntsiab lus.

Corrosion to taub: High-lub zog boltsXav tau kev xav tau cov khaub ncaws hnav tom qab (piv txwv li, 200 degree × 24h).