生茶工序

內(nèi)孔直徑

長度

直線度

內(nèi)孔精度

外徑精度

內(nèi)孔粗糙度

honing

Φ40-800mm

≤13m

0.2-0.3mm

H8~H9

±8%

<=0.8 um

材質(zhì)

C

Si

Mn

P

S

Cr

Ni

Cu

V

Al

1020

0.17-0.23

0.17-0.37

0.35-0.65

<=0.035

<=0.035

<=0.25

<=0.30

<=0.25

-

-

C45

0.42-0.50

0.17-0.37

0.50-0.80

<=0.035

<=0.035

<=0.25

<=0.30

<=0.25

-

-

16Mn

0.13-0.19

0.20-0.60

1.20-1.60

<=0.030

<=0.030

<=0.030

<=0.30

<=0.25

-

-

27SiMn

0.24-0.32

1.10-1.40

1.10-1.40

<=0.035

<=0.035

<=0.30

<=0.30

<=0.20

-

-

ST52

<=0.20

<=0.50

<=1.70

<=0.035

<=0.035

<=0.30

<=0.50

<=0.30

<=0.15

-

ST52.3

<=0.18

<=0.50

<=1.70

<=0.030

<=0.25

<=0.30

<=0.50

<=0.30

<=0.15

≥0.015

材質(zhì)

冷硬交貨(hard) (BK)

冷硬退火 (hard) (BK+S)

硬度

沖擊功 (-20°C) J

T.S bN/mm²

Elongation 85%

T.S bN/mm²

Y.S SN/mm²

Elongation 85%

1020

≥550

≥8

≥520

≥400

≥15

170

--

C45

≥680

≥5

≥630

≥520

≥12

190

--

16Mn

≥640

≥5

≥600

≥520

≥14

160

--

27SiMn

≥780

≥5

≥700

≥580

≥10

220

--

ST52

≥660

≥8

≥620

≥520

≥15

190

--

ST52.3

≥660

≥8

≥620

≥520

≥15

190

≥27

內(nèi)徑

內(nèi)徑公差

 壁厚精度

H7

H8

H9

H10

H11

30

+0.0210

+0.0330

+0.0520

+0.0840

+0.1300

 
 
 
±5%

>30-50

+0.0250

+0.0390

+0.0620

+0.1000

+0.1600

>50-80

+0.0300

+0.0460

+0.0740

+0.1200

+0.1900

>80-120

+0.0350

+0.0540

+0.0870

+0.1400

+0.2200

>120-180

+0.0400

+0.0630

+0.1000

+0.1600

+0.2500

>180-250

+0.0460

+0.072

+0.1150

+0.1850

+0.2900

>250-315

+0.0520

+0.0810

+0.1300

+0.2100

+0.3200

>315-800

+0.0570

+0.0890

+0.1400

+0.2300

+0.3600

外徑

公差

外徑

公差

≤Φ40

±0.15

Φ160~200

±0.80

Φ40~60

±0.25

Φ200~240

±1.00

Φ60~80

±0.30

Φ240~340

±1.50

Φ80~100

±0.40

Φ340~440

±2.00

Φ100~160

±0.50

Φ440~520

±2.50