Yadda za a zabi mai gwajin taurin don gwada samfuran tubular?

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1) Za a iya amfani da na'urar gwajin taurin Rockwell don gwada taurin bangon bututun ƙarfe?

Gwajin abu shine SA-213M T22 karfe bututu tare da diamita na waje na 16mm da kauri na bango na 1.65mm. Sakamakon gwajin gwajin taurin Rockwell sune kamar haka: Bayan cire ma'aunin oxide da decarburization Layer a saman samfurin tare da injin niƙa, ana sanya samfurin akan benci mai siffar V, kuma ana amfani da gwajin HRS-150S na dijital Rockwell hardness tester don gwada taurin Rockwell kai tsaye a samansa na waje tare da nauyin 980.7N. Bayan gwajin, ana iya ganin bangon bututun ƙarfe yana da ɗan nakasu, kuma sakamakon shine ƙimar taurin Rockwell da aka auna ya yi ƙasa da ƙasa, wanda ya haifar da gwajin mara inganci.

Dangane da GB/T 230.1-2018 «Kayan Karfe Rockwell Hardness Gwajin Sashe na 1: Hanyar Gwaji», taurin Rockwell shine 80HRBW kuma mafi ƙarancin kauri shine 1.5mm. A kauri na samfurin No. 1 ne 1.65mm, da kauri daga cikin decarburized Layer ne 0.15 ~ 0.20mm, da kuma kauri daga cikin samfurin bayan cire decarburized Layer ne 1.4 ~ 1.45mm, wanda yake kusa da m kauri daga cikin samfurin kayyade a GB / T 230.1-2018. A lokacin gwajin, tunda babu tallafi a tsakiyar samfurin, zai haifar da ɗan nakasu (wanda ido tsirara ba zai iya gani ba), don haka ainihin ƙimar taurin Rockwell yana da ƙasa.

2) Yadda za a zažar ma'aunin taurin surface don bututun ƙarfe:

Bayan gwaje-gwaje da yawa akan taurin saman bututun ƙarfe, kamfaninmu ya zo ga ƙarshe:

1. Lokacin gudanar da gwajin taurin Rockwell ko gwajin taurin Rockwell akan saman bututun ƙarfe na bakin ciki, rashin isasshen goyon bayan bangon bututu zai haifar da nakasar samfurin kuma ya haifar da ƙarancin sakamakon gwaji;

2. Idan an ƙara goyon bayan cylindrical a tsakiyar bututun ƙarfe na bakin ciki, sakamakon gwajin zai zama ƙasa kaɗan saboda ba za a iya tabbatar da axis na shugaban matsa lamba da kuma jagorancin lodin kaya don zama daidai da saman bututun ƙarfe ba, kuma akwai rata tsakanin farfajiyar waje na bututun ƙarfe da goyon bayan cylindrical.

3. Hanyar canza taurin Vickers da aka auna zuwa taurin Rockwell bayan shigar da goge samfurin bututun karfe yana da inganci.

4. Bayan cire oxide sikelin da decarburization Layer a saman saman karfe bututu da kuma machining jirgin gwajin a kan m surface da inlaying da shi, da surface Rockwell hardness ya juya zuwa Rockwell hardness, wanda shi ne in mun gwada da daidai.


Lokacin aikawa: Juni-13-2024