I gat tripela kategori bilong ol hatnes tes standet bilong ol pit oven, em ol Vickers, Rockwell na pes Rockwell hatnes veliu. Folem fasin blong tritim hat, ol rod blong tes blong tes blong mekem ol strong samting oli kam strong moa mo ol furnace we oli mekem man i harem nogud blong hatem hat mo ol kemikol hit tritmen furnace tu oli defren.
Ol bikpela teknikel paramita bilong ol kemikel hat tritmen wokpis i hat tru long leit dip na pes hatnes. Ol i mas testim yet strong bilong leit bilong leit wantaim wanpela Vickers hatnes testa. Test longwe long wokpis pes i go inap long mak we hat i go daun long 50HRC. Dispela em i gutpela samting bilong mekim i kamap hat.
Kemikel hit tritmen em long go insait long pes bilong wokpis wantaim ol atom bilong wanpela o sampela kemikel element, na long dispela rot senisim kemikel komposesen, straksa na ol samting bilong wokpis pes. Bihain long em i pinisim na daunim hat bilong em, wokpis pes i gat bikpela hat, wear resistens na kontek strong bilong em i les, taim as bilong wokpis i gat bikpela strong.
Tes bilong hat bilong wok bilong wokpis bilong pit furnace kemikal hat tritmen i wankain olsem hat tes bilong wokpis bilong pes bilong pes i save daunim hat tritmen. Tupela wantaim i ken kisim tes long Vickers hatnes testa, pes Rockwell hatnes testa o Rockwell hatnes testa. Tasol, tiknes bilong tiknes bilong naitriding i liklik moa, planti taim i no winim 0.7mm, olsem na ol i no inap yusim moa Rockwell hatnes testa.
Sapos ol lokol hatnes rikwaemen blong ol pat oli hae, lokol quenching hit tritmen i save kamaot tru long induksen hiting mo ol nara metod. Ol kain hap olsem i save nidim long makim ples na lokol hatnes veliu bilong lokol quenching hit tritmen long ol droing. Ol i mas mekim hat tes bilong ol hap bilong ol hap long hap ol i makim. Dispela instramen bilong testim hatnes inap yusim Rockwell hatnes testa long traim HRC hatnes veliu. Sapos hat tritmen hatening leit i no dip tumas, ol i ken yusim pes Rokwell hatnes testa long traim HRN hatnes veliu.
Ol i save mekim wok bilong daunim na hatim hat bilong paia bilong pit oven, long rot bilong induksen hat o paia hat. Ol bikpela teknikel paramita em hatnes bilong pes, lokol hatnes na efektiv hatening leit dip. Dispela hat tes inap kamap long rot bilong Vickers hatnes testa, Rockwell o surface Rockwell hatnes testa. Seleksen bilong tes fos (skel) i pas wantaim efektiv hatening leit dip na pes hatnes bilong wokpis. I gat tripela kain hatnes testa i stap insait long hia.
Vickers hatnes testa em i wanpela bikpela rot bilong traim hat bilong ol wokpis ol i bin tritim long hat. Em i ken yusim wanpela tes fos bilong 0.5 i go long 100 kg long traim pes ol i hatim long pes i liklik olsem 0.05 mm. Em i gat bikpela stretpela mak na em inap luksave long liklik samting i narapela kain long hat bilong wok pis. Antap long dispela, ol Vickers hatnes testa i mas painim gutpela hat bilong leit. Olsem na em i mas givim wanpela Vickers hatnes testa bilong ol yunit we i save karimaut ol wok bilong hatim pes o yusim bikpela namba bilong ol wokpis ol i bin tritim long hat bilong hat.
Saper Rockwell hatnes testa tu i gutpela tru long testim hat bilong ol wokpis ol i bin kilim i dai long pes. Testa bilong Rockwell hatnes i gat tripela skel bilong makim. Em i ken traim ol kain kain wok i hat tru na i gat gutpela hat long winim 0.1 mm. Nomata we i no gat stret fasin blong testa blong Rockwell we i stap antap, i no hae olsem hemia blong man we i testem ol hadnes blong Vickers, i save mitim ol rikwaemen olsem wan wei blong manejem kwaliti mo kwalifae inspeksen blong ol ples blong tritim hat. Moa yet, em i gat ol pasin bilong simpol operesen, isi yus, liklik prais, hariap mesamen, na stretpela riding bilong ol hatnes veliu. Ol i ken yusim surpwell hatnes testa long pes bilong en long hariap na i no inap bagarapim ol wokpis bilong ol wokpis ol i bin tritim long hat bilong hat, wan wan. Dispela em i bikpela samting tru long ol fektori bilong wokim ol samting bilong ain na wokim ol masin.
Taem we ples blong mekem hat blong hem i kam strong moa, i tik, oli save yusum Rockwell hadnes testa tu. Taem we tiknes blong leja i strong i 0.4-0.8mm, oli save yusum HRA skel, mo taem we tiknes blong leja we i mekem i kam strong i bitim 0.8mm, oli save yusum skel blong HRC.
Ol tripela hatnes veliu bilong ol Vickers, Rockwell na surface Rockwell i ken isi long tanim i go long narapela narapela na tanim i go long ol hatnes veliu ol standet, droing o yusa i nidim. Ol konvesen tebol i stret wantaim ol i givim long intanesenel standet ISO, standet bilong Amerika ASTM na standet GB/T bilong Saina.
