Moffeloond hittebehandeling werking proses

The muffle furnace heat treatment furnace is a comprehensive process in which materials are heated, insulated and cooled in a certain medium, and their performance is controlled by changing the surface or internal structure of the material.

Common processing method of muffle furnace:

1: Muffle furnace annealing: refers to a heat treatment process in which metal materials are heated to an appropriate temperature, kept for a certain period of time, and then slowly cooled. Common annealing processes are: recrystallization annealing, stress relief annealing, spheroidizing annealing, complete annealing and so on. The purpose of annealing: mainly to reduce the hardness of metal materials, improve plasticity, to facilitate cutting or pressure processing, to reduce residual stress, to improve the uniformity of structure and composition, or to prepare for the subsequent heat treatment.

2: Moffeloond normalisering: verwys na die proses om staal- of staalonderdele bokant of (die boonste kritieke punttemperatuur van staal) te verhit, dit vir ‘n gepaste tydperk op 30~50℃ te hou en dit dan in stil lug af te koel. Die doel van normalisering is om die meganiese eienskappe van laekoolstofstaal te verbeter, bewerkbaarheid te verbeter, korrels te verfyn, strukturele defekte uit te skakel en voor te berei vir die daaropvolgende hittebehandeling.

3: Muffle furnace quenching: refers to heating the steel to a temperature above Ac3 or Ac1 (the lower critical point temperature of steel), keeping it for a certain period of time, and then obtaining martensite (or bainite) at an appropriate cooling rate ) The heat treatment process of the organization. Common quenching processes include salt bath quenching, martensite graded quenching, bainite austempering, surface quenching and partial quenching. The purpose of quenching: to obtain the required martensite structure of the steel, improve the hardness, strength and wear resistance of the workpiece, and prepare the structure for the subsequent heat treatment.

4: Muffeloondtempering: verwys na die hittebehandelingsproses waarin staalonderdele geblus word en dan tot ‘n sekere temperatuur onder verhit word, vir ‘n sekere tydperk gehou word en dan tot kamertemperatuur afgekoel word. Algemene tempering prosesse is: lae temperatuur tempering, medium temperatuur tempering, hoë temperatuur tempering en meervoudige tempering. Die doel van tempering: hoofsaaklik om die spanning wat deur die staal gegenereer word tydens blus uit te skakel, sodat die staal hoë hardheid en slytasieweerstand het, en die vereiste plastisiteit en taaiheid het.