doosan heavy industries & construction doosan plastic mold …d2)_hh.pdf · 2017-04-03 · hh...
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서울사무소 (SEOUL OFFICE)우편번호 137-920 서울시서초구강남대로465Mail Code 137-920 465 Gangnam-daero,Seocho-Gu, Seoul KoreaTel. 82-2-513-6114 Fax. 82-2-513-6200
창원본사 (HEAD OFFICE AND CHANGWON PLANT )
우편번호 경상남도창원시성산구두산볼보로22Mail Code 642-792 22 DoosanVolvo-ro, Seongsan-Gu, Changwon, Gyeongnam KoreaTel. 82-55-278-6114, 7114 Fax. 82-55-264-5551~2
DOOSAN PLASTIC MOLD STEELHP4MA(D2)_HH
Doosan Heavy Industries & Construction
Doosan Heavy Industries & Construction www.doosanheavy.com
642-792
| HP4MA(D2)_HH개요 |
■ 향상된절삭가공성 (Improved Machinability) ■ 균일한경도분포 (Uniform Hardness)■ 고 청정도를바탕으로한경면사상성우수 (Excellent Polishability)■ 뛰어난내마모성및부식가공성 (Outstanding Wear Resistance and Photo-etching)
특징 (Characteristics)
화학성분 (Chemical Compositions)
DIN
HP4MA(D2)_HH
DOOSANBRAND
2738 Improved P20 Improved SNCM Improved 718 Improved
REFERENCE SPECIFICATION
AISI JIS ASSAB
Ni C
0.25~0.35 0.40~0.90 1.50~2.10 0.30~0.70 Added
Cr Mo Special Alloy
|기계적 성질및부식가공성 |
기계적성질 (Mechanical Properties)
표면경도Surface Hardness(HRc)
35~39
항복강도 Yield Strength(MPa)
830~1050
인장강도 Tensile Strength(MPa)
1020~1250
DP 10 Comm. Mat'l
70
60
50
40
30
20
10BM HAZ WM HAZ BM
경도
(HRc
)
As Weld
After PWHT
편석 (Segregation) & 부식가공성 (Photo Etching)
|기계가공성 (Machinability) |
|용접조건 (Procedure for Repair Welding) |
|용접성 (Weldability) |
Test Condition•Cutter: M415SP-05R-12•Insert: SPKN1203EDTR-HP+/TT7080•V=200m/min f=0.12mm/tooth•d=2.0mm Center cutting dry
Procedure Remarks
WeldingPost Heating
(250~350℃)Preheating
Slow cooling
용접봉(Filler Metals)
AWS ER90S-B3 Welding Rod:Ø1.6, Ø2.4
1hr / 50mm
예열(Preheat Temperature)
250±50℃(200~300) Fuel: LNGFuel Pressure: 0.5Kg/cm2
Post Heat Treatment(PHT)
TP(Holding Temperature)320±20℃
Post Weld Heat Treatment(PWHT)
Required Polishing andEtching Workability
TP
Welding Slow cooling(≤50℃/hr)
300℃
PWHT
(500~600℃)
(250~350℃)Preheating 1-2hr*
* Slow cooling
DO
OS
AN
HEA
VY
IND
US
TRIE
S&
CO
NS
TRU
TIO
N|
DO
OS
AN
PLA
STI
CM
OLD
STE
ELH
P4M
A(D
2)_ H
H
HP4MA(D2) HP4MA(D2)_HH
Yield Tensile1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200100
Cutting Distance(mm)
1
0.8
0.6
0.450.4
0.2
0
VBm
ax(m
m)
0.8 3.2 5.6 8
2738 improved
Life of Tool (0.45)
HP4MA(D2)_HH
*BM : Base Metal *WM : Weld Metal *HAZ : Heat Affected Zone
44
42
40
38
36
34
32
30
-200 -100 0 100 200
Har
dnes
s(H
Rc)
Stre
ngth
(MPa
)
Distance from the Center(mm)
HP1A
HP4A
HP4MA
HP4MA(D2)_HH
DP10
HP-70
Mirror Polishability
Polishing Property(Schematic Diagram)
Har
dnes
s
편석조직이거의나타나지않고균일하여우수한부식가공성을가짐
Outstanding photo-etching fromlow segregation and homogeneousmicrostructure
기계가공성이우수하여공구소모량절감및가공시간단축가능함
Saving tools wear and machining time byexcellent machinability
PWHT 후 용접부경도편차가적어경면가공시유리함
Better polishing byconsistency in hardnessbefore/after PWHT
편석 (Segregation) 부식가공성 (Photo Etching)
Description
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