CD bars are a high-quality product that is the product of numerous manufacturing processes. First the raw materials of hot-rolled wire rods and round bars undergo a cold drawing process. This is followed by their being cut at fixed intervals, followed by their undergoing a process of correction that takes into consideration the desired surface toughness, dimensional accuracy, and straightness. |
|
 Classification by measurements |
 |
SHAPE |
 |
TYPE |
|
GRADE |
|
SIZE(mm) |
|
LENGTH(mm) |
 |
| Round |
COIL TO BAR |
SS400, S45C |
6~25 |
4000~6000 |
| BAR TO BAR |
SS400, S45C |
28~100 |
5800~6700 |
|
| |
| Manufacturing Process |
WIRE ROD (COIL)
|
ROUND BAR (black round bar)
|
Preliminary braces
|
SHOT BLAST
|
SHOT BLAST
|
DRAW BENCH
|
COIL DRAWING MACHINE
|
CUTTING
|
2-ROLL STRAIGHTENING
|
2-ROLL STRAIGHTENING
|
INSPECTION
|
INSPECTION
|
PACKING
|
PACKING
|
| CD-BAR |
DB-BAR |
|
| |
| Possessed Equipment and Facilities |
|
Type |
|
AISI (SAE) |
|
Number |
|
Maker |
|
| CDM 1B |
6~12 |
2 |
MIYAZAKI/JAPAN |
| CDM 2B |
12~26 |
3 |
MIYAZAKI/JAPAN |
| DRAW BENCH |
25~80 |
1 |
domestic manufacturer |
| 40~100 |
1 |
domestic manufacturer |
| POLISHING |
6~12 |
2 |
MIYAZAKI/JAPAN |
| 2-ROLL STRAIGHTENER MACHINE |
6~12 |
1 |
E.J.P/GERMANY |
| 10~26 |
3 |
E.J.P/GERMANY |
| 25~50 |
1 |
E.J.P/GERMANY |
| 9-ROLL STRAIGHTENER MACHINE |
30~100 |
1 |
KIESERLING/GERMANY |
| Double-edge saw |
30~100 |
1 |
KIESERLING/GERMANY |
| 20~100 |
1 |
WRENCH SET |
|
| |
| Classification by grade of diameter tolerance |
|
Type |
|
Grade 8(H8) |
|
Grade 9(H9) |
|
Grade 10(H10) |
|
Grade 11(H11) |
|
| ~3 and below |
0, -0.014 |
0, -0.025 |
0, -0.040 |
0, -0.060 |
| 3 through 6 |
0, -0.018 |
0, -0.030 |
0, -0.048 |
0, -0.075 |
| 6 through 10 |
0, -0.022 |
0, -0.036 |
0, -0.058 |
0, -0.090 |
| 10 through 18 |
0, -0.027 |
0, -0.042 |
0, -0.070 |
0, -0.110 |
| 18 through 30 |
0, -0.033 |
0, -0.052 |
0, -0.084 |
0, -0.130 |
| 30 through 50 |
0, -0.039 |
0, -0.062 |
0, -0.100 |
0, -0.160 |
| 50 through 80 |
0, -0.046 |
0, -0.074 |
0, -0.120 |
0, -0.190 |
| 80 through 120 |
0, -0.054 |
0, -0.087 |
0, -0.140 |
0, -0.220 |
|
| |
|
|
