Dab tsi yog Cov Kev Txiav Txim Siab ntawm Lub Dav Hlau Bar hauv Longwall Coal Mining?

1. Kev txiav txim siab ntawm cov khoom

1. High-Strength Alloy steel: Feem ntau siv cov pa roj carbon siab (piv txwv li, 4140, 42CrMo4) lossis alloy steels (xws li, 30Mn5) raudavhlau tuavdurability thiab hnav tsis kam.

2. Hardness & Toughness: Case hardening (xws li, carburizing) rau saum npoo hardness tshwj xeeb tshaj yog cov lus qhia davhlau ya nyob twg (55-60 HRC) nrog cov tub ntxhais tawv. quenching thiab tempering kom sib npaug zog thiab yooj.

3. Kev Tiv Thaiv Kev Tiv Thaiv: Cov khoom siv ntxiv xws li chromium lossis boron txhim kho kev hnav tsis kam tiv thaiv cov thee / pob zeb abrasion.

4. Corrosion Resistance: Coatings (xws li, zinc plating) los yog stainless hlau variants nyob rau hauv corrosive ib puag ncig.

5. Weldability: Tsawg-carbon variants los yog pre/post-weld tshav kub kev kho mob los tiv thaiv brittleness.

2. txheej txheem forging

1. Txoj kev: Kaw-tuag poob forging rau grain flow alignment, txhim khu kev ua haujlwm zoo. Nias forging rau precision nyob rau hauv cov duab complex.

2. Cua sov: Billets rhuab mus rau 1100-1200 ° C (rau steel) los xyuas kom meej malleability.

3. Kev kho tom qab Forging:

4. normalizing kom txo tau kev ntxhov siab.

5. quenching (roj / dej) thiab tempering (300-600 ° C) rau qhov xav tau hardness.

6. Machining: CNC machining rau leej tolerances (± 0.1 hli).

7. Kev Txhim Kho Ntog: Kev tua blasting kom induce compressive kev nyuaj siab thiab txo qaug zog.

3. Kev Tshawb Fawb & Kev Xeem

1. Visual & Dimensional Checks: Tshawb xyuas cov kab nrib pleb / tsis zoo; siv calipers / CMM rau qhov loj me (thickness, qhov sib npaug).

2. Kev Ntsuas Hardness: Rockwell C nplai rau saum npoo, Brinell rau cov tub ntxhais.

3. NDT: Sib Nqus Particle Tshuaj Ntsuam Xyuas (MPI) rau qhov tsis zoo; Ultrasonic Testing (UT) rau cov teeb meem sab hauv.

4. Load Testing (yog tias tsim nyog): Siv 1.5x kev ua haujlwm load kom muaj kev ncaj ncees.

5. Kev ntsuas tensile: nrog daim coupon los ntawm tib cov khoom thiab cov txheej txheem forging thiab kev kho cua sov nrog cov khoom siv dav hlau, yuav raug kuaj xyuas qhov tensile thiab / los yog kev ntsuam xyuas.

6. Metallurgical Analysis: Microscopy los xyuas cov qauv nplej thiab theem muaj pes tsawg leeg.

7. Daim ntawv pov thawj: Ua raws li ISO 9001/14001 lossis ASTM cov qauv.

4. Cov ntsiab lus tseem ceeb los ua ke nrog Mining Chains & Sprockets

1. Kev sib tw: Siv cov cuab yeej laser alignment kom ntseeg tau tias <0.5 mm / m sib txawv; misalignment ua rau tsis sib xws sprocket hnav.

2. Tensioning: Optimalround txuas sawnro (piv txwv li, 1-2% elongation) los tiv thaiv slippage lossis kev ntxhov siab ntau dhau.

3. Lubrication: Siv cov roj uas muaj roj ntau kom tsis txhob muaj kev sib txhuam thiab tiv thaiv lub galling.

4. Sprocket Engagement: Matchspockethniav profile (xws li, DIN 8187/8188) rau mining saw pitch; tshuaj xyuas kev hnav (> 10% cov hniav thinning yuav tsum tau hloov).

5. Fastening: Torque bolts rau cov chaw tsim khoom specs (piv txwv li, 250-300 Nm rau M20 bolts) nrog cov xov-xauv cov tebchaw.

6. Pre-Assembly Checks: Hloov cov sprockets / mining saw txuas; xyuas kom lub davhlau bar qhov sib tw sib tw conveyor tsim.

7. Kev Ntsuam Xyuas Tom Qab Kev Sib Tham: Khiav hauv qab load (2-4 teev) txhawm rau kuaj xyuas qhov txawv txav / suab nrov.

8. Ib puag ncig Factors: Seal pob qij txha tiv thaiv cov hmoov av / noo noo ingress.

9. Kev saib xyuas: Nruab IoT sensors rau lub sijhawm taug qab ntawm qhov nro, kub, thiab hnav.

5. Kev tu thiab kev cob qhia

1. Kev cob qhia cov neeg ua haujlwm: Hais txog kev tuav kom raug, cov txheej txheem torque, thiab cov txheej txheem sib dhos.

2. Predictive Maintenance: Tsis tu ncua thermographic scans thiab vibration tsom xam rau preempt tsis ua hauj lwm.


Post lub sij hawm: Mar-04-2025

Tso koj cov lus:

Sau koj cov lus ntawm no thiab xa tuaj rau peb