You are here:home > Industry news > Pruduct's Detail
How to improve the structure of heat treatment process.
High frequency quenching of gears
How to improve the structure of heat treatment process.
In the part structure design should pay attention toimproving the heat treatment process, the structure design of parts of heat treatment requirements:
1) sharp edge angle to blunt or rounded corners.
2) try to make parts area evenly, mass balance. When necessary, additional technical holes or process slot, andreasonable distribution of the position of the position and number.
3) the slender shaft is too large than the.
4) hole requires hardening, strain through bolt holes.Between the hole and the hole or hole and edge should have a certain distance. If possible, at the bottom of the holecan be drilled in the transverse, improve the cooling condition when quenching hole.
5) improve parts structure rigidity, when necessary,additional ribs.
6) should be simple, symmetric geometry.
7) prior to heat treatment to have a certain surface roughness. Surface hardened parts roughness not larger than Ra3.2 µ m; nitriding workpiece surface roughness value,brittle value, hardness measurement is not accurate,general requirements for Ra in 0.80~0.10 µ m; carburizing parts surface roughness less than Ra6.3 µ M. The surface can not have deep impression, key parts cannot have.
8) a particularly complex shape or different parts have different performance requirements, in the possible situation can be changed into composite structure. Thelong, thin long parts, the structure may be spliced, should as far as possible splicing.
9) avoid matching with the hole, carburizing, nitridinglocal local.
10) to the large, long piece, design should be considered when the clip, hanging for heat treatment.
11) high frequency quenching site should try to avoid holes or grooves. A hole or slot can not be avoided, the edgemust be chamfered, keyway in circular arc chamferinggroove.
12) with key hole sleeve and the gear, cylindrical or toothfor high-frequency quenching, the wall thickness of the minimum size limits, in order to avoid the error of deformation.
In addition, the parts of the structure shape and the heat treatment process and the selection of a certain relationship equipment. For example, the elongated elements shall be made of well type furnace hanging heating. Heat treatment process parameters not only according to thematerials used to determine the shape and size, but alsoshould be based on factors such as parts to adjust.Quenching, elongated and cylindrical parts should beaccording to the length direction of quenched into themedium; disc parts should be radial and transverse quenched into move around; long blade should make the edge at the same time first in quenching liquid sheet with holes,grooves, all parts should be chosen so that the easydirection of flow of liquid quenching quenching. In short,parts of the structure should be heat treatment processesand the required adaptation.