Wɔkyerɛ ɔhyew a ɛwɔ dum no mu titiriw sɛnea ɛho hia kɛse sɛ chromium cast iron a ɛwɔ chromium a ɛkorɔn no mu no yɛ hyew.Subeutectoid steel taa yɛ hyew kodu 30 ~ 50 degree, bere a wɔde eutectoid dade ne hypereutectoid dade a ɛyɛ hyew no yɛ hyew kodu 30 ~ 50 degrees a ɛboro AC1 so, na wɔ tebea horow bi mu no, wɔde ~ degreed no ^iting 60 degreen no.iwing ^Iting uute.if Dadeɛ no sua sene AC3 deɛ, ɛnde dadeɛ no nnya nyɛɛ austenitized koraa saa berɛ yi, na ferrite bi a wɔansakra no wɔ hɔ, na ferrite no da so ara wɔ quenching structure no mu wɔ quenching akyi.The hardness of ferrite is low, so hardness after after duming be significantly larger, thus damaging the properties after quenching.The eutectoid steel was heated above Ac1 at 30 ~ 50℃.After quenching, only a few residual austenite particles were found in vitro, and the structure was small carbide particles evenly distributed on the lamellar martensite matrix.Such tissues have high hardness, good wear resistance and relatively low brittleness.The quenching temperature of hypereutectoid steel no ntumi nkɔ fam nsen AC1 de no, efisɛ wɔanyɛ dade no austenitized saa bere yi.Sɛ wɔde ɔhyew no yɛ hyew kakra sen ɔhyew no a, pearlite no dan austenite koraa na cementite kakraa bi na ɛyɛ austenite.Austenite aburow no yɛ fɛ yiye na wɔde gya no fã a ɛkɔ so no yɛ nea ɛkɔ so no yɛ nea ɛkɔ so yɛ nea ɛkɔ so no yɛ nea ɛkɔ so yɛ kɛse sen nea ɛkɔ so no yɛ nea ɛkɔ so yɛ kɛse a ɛkɔ so yɛ nea ɛkɔ so no. Austenite, a ɛde austenite nnua a ɛkɔ so nyin ne carbon dodow a ɛrekɔ soro, a ɛbɛma quenching deformation su no akɔ soro, quenching microstructure microcracks ne brittleness.Wɔ bere koro no ara mu no, esiane austenite carbon a ɛdɔɔso a ɛwɔ mu nti, dodow a residual austenite no kɔ soro wɔ quencher a ɛyɛ den no akyi, a ɛma quenching no so tew.
Enti, dade a ɛma ɔhyew a ɛboro so a ɛwɔ dade a ɛboro so no hyew no mfata sɛ ɛboro AC1 so dodo, na ɔhyew a ɛkɔ ɔhyew a ɛwɔ Austenitized ACM anaa nea ɛboro saa mu no mfata kɛse mpo .
