1.2767 STEEL WITH HEAT TREATMENT KNOWLEDGE .
From: Author:ss@solarsteel.cn Publish time:2021-10-14 11:37 Clicks:16
1.2767 Steel Equivalent Steel with exact or nearest equivalents
|
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
|
1.2767 |
0.40-0.50 |
0.10-0.40 |
0.20-0.50 |
≤0.030 |
≤0.030 |
1.20-1.50 |
0.15-0.35 |
3.80-4.30 |
|
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
|
45NiCrMo16 |
0.40-0.50 |
0.10-0.40 |
0.20-0.50 |
≤0.030 |
≤0.030 |
1.20-1.50 |
0.15-0.35 |
3.80-4.30 |
1.2767 steel it it belong to one of the type of plastic mould steel .
1.2767 steel with Brinell Hardness ≤ 285 HB according to the the standard of EN 4957-2000.
1.2767 Plastic die steel it has good wear resistance, high toughness, high hardness, high compressive strength, excellent dimensional stability, excellent corrosion resistance, good polishing and cutting performance, easy to achieve mirror effect.Excellent harden-ability, air hardening, excellent machining performance.
HEAT TREATMENT of 1.2767 STEEL:
Soft annealing:
- 600 to 650 °C for about 2 to 5 hours
- slow controlled cooling of 10 to 20 °C per hour to about 600 °C
- further cooling in air, max. 260 HB
Hardening:
- 840 to 870 °C
- Quenching in oil/hot bath/air
- Obtainable hardness: 53−58 HRC
Tempering:
- A tempering should be performed on 2767 immediately after quenching at a temperature depending on required hardness (see tempering curve below).
- The tempering temperature should be hold 2 hours minimum or 1hour /20mm of thickness.
- Slow heating to tempering temperature immediately after hardening.
- Tempering twice is recommended.
Polishing process ofo1.2767 steel as follows:
1. Polish the surface with an oilstone strip (from rough to fine) as follows: #320->800->1200->3000
2. Use sandpaper (from rough to fine) to polish the surface as follows: #1200->1500->2000->3000
3. Polish directly with #1 diamond plaster.
All the above procedures have basically reached the mirror effect, if it is found that some part of the effect is not ideal, you can do it again according to the above procedures, the problem will be solved.
Note: Sanding #1500 and 2000 sandpaper needs to be repeated twice with cross method.
Due to the high purity of steel, uniform material, so the polishing performance is superior, can reach a high mirror processing.
Note: it is not easy to apply too much pressure during polishing to avoid surface defects.
1.2767 steel we can offer you with the plate , round bar , flat bar types from SOLAR SPECIAL STEEL INTERNATIONAL LIMITED .
And 1.2767 steel will accept to do the UT testing before the loading and creat the testing report to submit the client for delivery issue .
Solar Special Steel International Limited
Contact Person :Wendy
Telephone:+86 18688633122 whatsapp&wechat
Skype: .cid.8920082fecfa0b5c
Email:ss@solarsteel.cn
