Ten Aspects Of Hot Runner Treatment

Heat flow channel treatment is divided into: normal, annealing, solid solution heat treatment, solid solution treatment, aging treatment, quenching, tempering, carbon and nitrogen co-infiltration of steel, tempering treatment and other ten aspects.
The following ten aspects of hot runner system are introduced:
1.Normalizing: heat treatment of pearlitic tissues by heating steel or steel to a critical point, AC3 or above, at an appropriate temperature, for a period of time, and cooling in the air.

2.Annealing annealing: heat the workpiece of hypoeutectoid steel to 20 to 40 degrees above AC3, heat it for a period of time, and then cool it in the air as the furnace cools slowly (or is buried in sand or lime) to less than 500 degrees

3.Solid solution heat treatment: heat the alloy to a high temperature single-phase zone at a constant temperature so that the excess phase is fully dissolved into the solid solution, which is then rapidly cooled to obtain the heat treatment process of the supersaturated solid solution

4.Aging: phenomenon in which the properties of an alloy change over time when it is placed at room temperature or slightly above room temperature after solid solution heat treatment or cold plastic deformation.

5.Solid solution treatment: to dissolve all phases of the alloy, strengthen the solid solution, improve toughness and corrosion resistance, eliminate stress and soften, so as to continue processing and molding

6.Aging treatment: heat and insulate the precipitated phase at the enhanced temperature to allow the precipitated phase to harden and increase the strength

7.Quenching: a heat treatment process in which the austenite of steel is cooled at an appropriate rate after austenization so that the workpiece is transformed into an unstable structure such as martensite in the cross section or within a certain range

8.Tempering: a heat treatment process in which the hardened workpiece is heated to an appropriate temperature below the critical point AC1 for a period of time and then cooled by a method that meets the requirements to obtain the required structure and properties

9.Carburization of steel: carburization is a process of simultaneous infiltration of carbon and nitrogen to the surface of steel.
Traditionally, carbonitriding is also known as cyanation. At present, carbonitriding is widely used in carbon nitriding of medium temperature gas and carbon nitriding of low temperature gas.
The main purpose of carbon nitriding is to improve the hardness, wear resistance and fatigue strength of steel.
The main purpose of carbon nitriding in low temperature gas is to improve the wear resistance and anti-bite of steel.

10.Quenching and tempering: the heat treatment combining quenching and tempering is commonly used as tempering treatment.
The tempering process is widely used in all kinds of important structural parts, especially the linkages, bolts, gears and shafts which work under alternating loads.
The tempered sorbite structure is obtained after tempering, and its mechanical property is better than that of normal sorbite with the same hardness.
Its hardness depends on the high temperature tempering temperature and is related to the tempering stability of steel and the sectional dimension of workpiece, generally between HB200 and 350.

11.Brazing: heat treatment in which two workpieces are bonded together by solder.

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