Heat Treating of Tool Steels – Tempering

-
Tempering is key in developing the final properties of the steel and, in the sequence of the heat treat cycle, is extremely important to perform immediately after quenching.



Tempering is reheating hardened steel to convert untempered martensite produced by the proper quenching cycle, to tempered martensite & also reduce the volume of the tooling (a much tighter microstructure) which increases the mechanical properties of the material (increases toughness & enhances wear).

Tool steels should never be used in an as quenched (untempered) condition.

All grades of tool steels have many tempering temperatures to achieve the best operational hardness that will optimize the performance of the tooling or part.

Note: always use the highest tempering temperature to achieve the rockwell hardness you want.

Note: 2-3 tempers are highly recommended in all tooling steels as this will assure you of total transformation to tempered martensite & a very homogeneous (tight) microstructure.

评论

发表评论

此博客中的热门博文

What Do YOU Know About Mold Steel Quality?

-
图片
Many industries place strict requirements on the acceptable level of surface defects and imperfections that may appear on a plastic molded part. Such conditions often apply to critical components for the medical and pharmaceutical industries as well as for the manufacturers of lenses and other optical devices. However, for aesthetic reasons, many other consumer goods have similar restrictions. After all, any defect that appears on the surface of the mold steel is likely to be replicated onto the molded part. Problems associated with the texturing or polishability of a mold cavity can often be traced back to the mold steelmaking process. The material properties that have shown the greatest influence on obtaining a good surface finish are the microcleanliness level, the severity of chemical segregation and the appearance of primary carbides. The mold steel's chemical composition along with the manufacturing techniques used during its production, will determine its ability to p...
阅读全文

Everything You Need To Know About Injection Molding

-
图片
What is Injection Molding: Injection Molding is a manufacturing process for producing parts in large volume. It is most typically used in mass-production processes where the same part is being created thousands or even millions of times in succession. Why Use Injection Molding: The principal advantage of injection molding is the ability to scale production en masse. Once the initial costs have been paid the price per unit during injection molded manufacturing is extremely low. The price also tends to drop drastically as more parts are produced. Other advantages include the following: Injection Molding produces low scrap rates relative to traditional manufacturing processes like CNC machining which cut away substantial percentages of an original plastic block or sheet. This however can be a negative relative to additive manufacturing processes like 3D printing that have even lower scrap rates. Note: waste plastic from injection molding manufacturing typically comes consistent...
阅读全文

M2 Tool Steel | 1.3343 | HS-6-5-2C| SKH51

-
图片
M2 Tool Steel | 1.3343 | HS-6-5-2C| SKH51 AISI  M2 Tool Steel  is molybdenum based high-speed steel in tungsten–molybdenum series.  HSS  grade steel  M2  is a medium alloyed high speed steel which has good machinability. The H-SS M2 chemical composition gives a good combination of well-balanced toughness, wear resistance and red hardness properties. Widely used for cutting tools such as twist drills, taps, milling cutters, saws, knives etc. Also commonly used in cold work punches and dies and cutting applications involving high speed and light cuts. Grade M2 High Speed Steel is by far the most popular high speed steel replacing high speed steel grade  T1  in most applications because of its superior properties and relative economy. We are one of leading AISI M2 HSS steel supplier and we can offer better quality and M2 alloy steel price for your various applications. 1. Supply Range of M2  tool steel  High Speed M2 Ste...
阅读全文