DC53 than SKD11 steel has good toughness, also have to SKH51 strength of high speed steel, is multi-purpose both hardness and toughness of cold work die steel.

The items should be paid attention to in the heat treatment

Quenching tempering heat treatment temperature model of basic like SKD11, according to different purposes, to cooperate with the following conditions is preferred.

Purpose, goal, etc

Heat treatment temperature (℃)

Use the hardness (HRC)

quenching

tempering

The value of the mold of abrasion resistance, burning resistance

(1) high tensile steel plate with forming mold

(2) extended processing with mold

(3) pressure to build and other plastic processing tools

Cold forging punch mould

Screw rolling die

(4) in thick bending die

1030 ~ 1040

520 ~ 540

(2)

61 ~ 63

Same conditions as the SKD11

(1) sheet with whole flange die stamping

(2) attaches great importance to the wire-cutting processing

1020 ~ 1030

1020 ~ 1030

180 ~ 200 (2)

(4) 520 ~ 540

60 ~ 62

61 ~ 63

Special requirements for high toughness of the tool and mould

(1) a slender punch, punching and shearing die, stamping die and general punching and shearing mould and stamping mould

(2) the thick pieces (1 mm or higher) in the metal cutting tool cut slices, slitting machine tool

1020 ~ 1040

Or 1010 ~ 1010

1020 ~ 1040

540 ~ 560 (2)

550 ~ 570 (2)

57 ~ 59

56 ~ 58

Attaches great importance to the size does not change for a long time (can omit cryogenic processing)

(1) precision mould, gauge

1020 ~ 1030

520 ~ 530 (2)

61 ~ 63

Note:

Above are authentic DC53 materials, according to the authentic DC53 need to adjust the process, but can not reach the performance requirements.

High temperature tempering must implement two times

In the high temperature tempering with residual voss Tian Tie decomposition, known as a new generation of martensitic steel, thus toughness deterioration (450 ~ 510 ℃ tempering temperature was the most dangerous range, should avoid to use). To avoid the collapse of tools in use short cracks, so secondary tempering treatment must be administered, to restore resilience.