Kodi mungasankhe bwanji choyesera kuuma poyesa zitsanzo za tubular?

1) Kodi choyesera kuuma kwa Rockwell chingagwiritsidwe ntchito poyesa kuuma kwa khoma la chitoliro chachitsulo?

Zipangizo zoyesera ndi chitoliro chachitsulo cha SA-213M T22 chokhala ndi mainchesi akunja a 16mm ndi makulidwe a khoma a 1.65mm. Zotsatira za mayeso a Rockwell hardness test ndi izi: Pambuyo pochotsa oxide scale ndi decarburization layer pamwamba pa chitsanzo ndi chopukusira, chitsanzocho chimayikidwa pa workbench yooneka ngati V, ndipo HRS-150S digital Rockwell hardness tester imagwiritsidwa ntchito kuyesa mwachindunji Rockwell hardness pamwamba pake ndi katundu wa 980.7N. Pambuyo pa mayeso, zitha kuwoneka kuti khoma la chitsulo payipi lili ndi kusintha pang'ono, ndipo zotsatira zake ndi zakuti Rockwell hardness value yomwe imayesedwa ndi yotsika kwambiri, zomwe zimapangitsa kuti mayesowo asagwire ntchito.

Malinga ndi GB/T 230.1-2018 «Metallic Materials Rockwell Hardness Test Part 1: Test Method», kuuma kwa Rockwell ndi 80HRBW ndipo makulidwe ochepera a chitsanzo ndi 1.5mm. Kukhuthala kwa chitsanzo Nambala 1 ndi 1.65mm, makulidwe a wosanjikiza wochotsedwa ndi 0.15~0.20mm, ndipo makulidwe a chitsanzo mutachotsa wosanjikiza wochotsedwa ndi 1.4~1.45mm, womwe uli pafupi ndi makulidwe ochepera a chitsanzo chomwe chafotokozedwa mu GB/T 230.1-2018. Panthawi yoyesa, popeza palibe chithandizo pakati pa chitsanzo, chidzapangitsa kusintha pang'ono (komwe sikungawonekere ndi maso), kotero mtengo weniweni wa kuuma kwa Rockwell ndi wotsika.

2) Momwe mungasankhire choyesera kuuma kwa pamwamba pa mapaipi achitsulo:

Pambuyo pa mayeso ambiri pa kuuma kwa mapaipi achitsulo pamwamba, kampani yathu yafika pa mfundo izi:

1. Poyesa kuuma kwa Rockwell pamwamba kapena Rockwell pamwamba pa mapaipi achitsulo okhala ndi makoma owonda, kusakwanira kwa khoma la chitoliro kungayambitse kusintha kwa chitsanzocho ndikupangitsa kuti mayesowo akhale ochepa;

2. Ngati chothandizira chozungulira chawonjezeredwa pakati pa chitoliro chachitsulo chokhala ndi makoma owonda, zotsatira za mayeso zidzakhala zochepa chifukwa mzere wa mutu wopanikizika ndi komwe katundu amanyamula sizingatsimikizidwe kuti zili molunjika pamwamba pa chitoliro chachitsulo, ndipo pali mpata pakati pa pamwamba pa chitoliro chachitsulo ndi chothandizira chozungulira cholumikizidwa.

3. Njira yosinthira kuuma kwa Vickers komwe kunayesedwa kukhala kuuma kwa Rockwell pambuyo poika ndi kupukuta chitsanzo cha chitoliro chachitsulo ndi yolondola kwambiri.

4. Pambuyo pochotsa oxide scale ndi decarburization layer pamwamba pa chitoliro chachitsulo ndikukonza test plane pamwamba pake ndikuyika mkati mwake, Rockwell hardness pamwamba pake imasinthidwa kukhala Rockwell hardness, yomwe ndi yolondola kwambiri.