Product Introduction |
제목 없음
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Cold Heading Quality Wires
Cold Heading Quality Wires
are used for the production of fasteners including bolts, nuts,
and screws. Fasteners have traditionally been manufactured by a
hot working method or machining of metals. However, the trend is
moving towards using the cold working process to enhance productivity
and to keep the cost down. Cold heading quality wires, therefore,
possess excellent workability and surface quality for the cold working
process. |
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Applications |
제목 없음
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Applications
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Automotive
* Engine: cylinder head bolt, piston rod, spark plug shell, etc.
* Steering system: ball joint stud, tie
rod pin, pinion etc.
* Wheel: hub bolt, nut, etc.
Airplanes:
high-tension bolts for wings
Construction: fastener bolts
for construction purposes
Bearing: ball bearing, roller
bearing etc.
Industrial machines: fastener bolt, nut,
screw, rivet, nipple
Electronic parts: material for switch
relay
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Classification by use
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Application
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Material
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Production process
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| Ball & Roller Bearing |
SUJ2 |
PASAIP |
| Ball Housing |
SWRCH45K |
PSASAIP |
| Ball Stud |
SCM415H~440H |
PASAIP |
| Boxer Wrench |
SWRCH45FCr |
SAIP |
| SCM415H |
PASAIP |
| Chain Pin |
SCM415H~435 |
AIP |
| Cylinder Head Bolt |
SCM435H |
AIP/PASAIP |
| Drill Piece |
SWRCH18A~22A |
SAIP |
| Armature Shaft |
SWRCH45K |
R)AIP |
| SWRCH45FCr |
SAIP |
| Flange Bolt & Nut |
SWRCH25K~45K |
SAIP/PSASAIP |
| SCM435 |
PASAIP |
| SWRCH10A |
HD |
| Hex. Bolt |
SCM435 |
AIP/PASAIP |
| SWRCH45K |
SAF/SAIP |
| Hub Bolt & Nut |
SCM435 |
AIP/PASAIP |
| Lead Wire |
SWRCH6A~8A |
HD |
| Nipple |
SUM24L |
SAIP |
| Piston Pin |
SCM415H~435H |
PASAIP |
| Screw |
SWRCH6A~10A |
HD/HRPP |
| Start Motor Parts |
10B21 |
SAIP |
| SWRCH45K |
SAIP |
| Tire Rod Pin |
SWRCH45K |
AIP/SAIP |
| Tire Spoke |
SCM435 |
PASAIP |
| Wheel Nut Wrench |
SWRCH45K |
SAIP |
| Wrench Bolt |
SWRCH45K |
SAIP |
| SCM435 |
AIP |
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General Hexagon Bolt
|
SWRCH10A |
HD |
| SWRCH25K |
AIP | |
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Classification by production process
| Symbol |
Process |
PC : Pickling & Coating
LA
: Low Temperature Annealing
A : Annealing
SA: Spheroidized
Annealing
D :Drawing |
| HD |
PC-D |
| RA |
PC-A-PC |
| SA |
PC-SA-PC |
| (R)AIP |
PC-A-PC-D |
| (S)AIP |
PC-SA-PC-D |
| SAF |
PC-D-SA-PC |
| SAIP |
PC-D-SA-PC-D |
| PASAF |
LA-PC-D-SA-PC |
| PASAIP |
LA-PC-D-SA-PC-D |
| PSASAIP |
PC-SA-PC-D-SA-PC-D | |
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Pickling and coating
The hot-rolled coil or wire rod
passes through the pickling line, where hydrochloric acid solution
is used to remove surface scale. A lubrication film forms on the
surface to reduce the coefficient of friction in the drawing and
cold working process.
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Intermediate drawing
This process produces half-finished
products for the following stage. It improves the ratio of spheroidization
during annealing.
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Spheroidized Annealing
This annealing process produces Spheroidized
carbides, which enables cold works. Once inserted into the heat
treatment furnace, it undergoes heating, fissuring and cooling.
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Skin Pass
The wire drawing machine produces half-finished
coils to meet the customers' needs in terms of the size and mechanical
properties of products.
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Product availability |
제목 없음
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Wire drawing machine
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Classification
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Quantity
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Wire Drawing Range (mm)
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Capacity (T/year) Maker
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Producer
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Large size
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3 |
15 ~ 40 |
64,800 |
EIWA, Youngsin, Singee
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Medium-large size
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3 |
10 ~ 20 |
42,600 |
Koch, Youngsin, Singee |
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Medium size
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5 |
6 ~ 13 |
32,400 |
EIWA, Youngsin, Singee |
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Small size
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4 |
2 ~ 8 |
16,200 |
Miyajaki, BUSANSANGEE |
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Total
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15 |
2 ~ 40 |
156,000 |
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Hot treatment furnace
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Classification
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Quantity
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Charge Quantity Capacity
(T/year)
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Capacity (T/year)
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Producer
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| Bell Type |
3 |
4/48 |
36,000 |
Ebner |
| S T C |
8 |
20/24 |
84,000 |
DAIDO, Dongbu Steel |
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Continuous
Furnace
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1 |
Continuous |
30,000 |
LOI |
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Total
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12 |
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150,000 |
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Pickling and film equipment
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Classification
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Quantity
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Capacity (T/year)
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Producer
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Manual Line
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2 |
144,000 |
Self manufacture
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Steel type quality features |
제목 없음
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Classification by mechanical properties
| Grade
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Process |
T/S(Kg/㎟)
(Tensile
strength)
|
HRB
(Hardness) |
Remarks |
| SWCH25K |
SA |
46 under |
72 under |
SKP:5% AVD.WD:15% AVG.
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| (R)AIP |
72 under |
97 under |
| (S)AIP |
68 under |
94 under |
| SAF |
46 under |
72 under |
| SAIP |
50 under |
85 under |
| SWCH45K |
SA |
54 under |
82 under |
SKP:5% AVD.WD:15% AVG.
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| (R)AIP |
72 under |
97 under |
| (S)AIP |
68 under |
94 under |
| SAF |
54 under |
86 under |
| SAIP |
56 under |
92 under |
| PSASAIP |
54 under |
86 under |
| SCM435 |
SA |
58 under |
86 under |
SKP:5% AVD.WD:15% AVG.
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| (R)AIP |
75 under |
99 under |
| (S)AIP |
72 under |
97 under |
| PASAF |
56 under |
92 under |
| PASAIP |
58 under |
92 under |
| PSASAIP |
56 under |
90 under | |
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Classification by chemical components
| Grade |
Chemical
Composition(%) |
Remarks |
| C |
Si |
Mn |
P |
S |
AI |
| SWRCH6A |
0.08 max |
0.10 max |
0.30-0.60 |
0.030 max. |
0.035 max. |
0.02 min. |
Aluminium
Killed Steel |
| SWRCH8A |
0.10 max |
0.10 max |
0.30-0.60 |
0.030 max. |
0.035 max. |
0.02 min. |
| SWRCH10A |
0.08-0.13 |
0.10 max |
0.30-0.60 |
0.030 max. |
0.035 max. |
0.02 min. |
| SWRCH12A |
0.10-0.15 |
0.10 max |
0.30-0.60 |
0.030 max. |
0.035 max. |
0.02 min. |
| SWRCH15A |
0.13-0.18 |
0.10 max |
0.30-0.60 |
0.030 max. |
0.035 max. |
0.02 min. |
| SWRCH16A |
0.13-0.18 |
0.10 max |
0.60-0.90 |
0.030 max. |
0.035 max. |
0.02 min. |
| SWRCH18A |
0.15-0.20 |
0.10 max |
0.60-0.90 |
0.030 max. |
0.035 max. |
0.02 min. |
| SWRCH19A |
0.15-0.20 |
0.10 max |
0.70-1.00 |
0.030 max. |
0.035 max. |
0.02 min. |
| SWRCH20A |
0.18-0.23 |
0.10 max |
0.30-0.60 |
0.030 max. |
0.035 max. |
0.02 min. |
| SWRCH22A |
0.18-0.23 |
0.10 max |
0.70-1.00 |
0.030 max. |
0.035 max. |
0.02 min. |
| SWRCH10K |
0.08-0.13 |
0.10 max |
0.30-0.60 |
0.030 max. |
0.035 max. |
- |
Killed Steel |
| SWRCH12K |
0.10-0.15 |
0.10-0.35 |
0.30-0.60 |
0.030 max. |
0.035 max. |
- |
| SWRCH18K |
0.15-0.20 |
0.10-0.35 |
0.60-0.90 |
0.030 max. |
0.035 max. |
- |
| SWRCH22K |
0.18-0.23 |
0.10-0.35 |
0.70-1.00 |
0.030 max. |
0.035 max. |
- |
| SWRCH25K |
0.22-0.28 |
0.10-0.35 |
0.30-0.65 |
0.030 max. |
0.035 max. |
- |
| SWRCH35K |
0.32-0.38 |
0.10-0.35 |
0.60-0.90 |
0.030 max. |
0.035 max. |
- |
| SWRCH38K |
0.35-0.41 |
0.10-0.35 |
0.60-0.90 |
0.030 max. |
0.035 max. |
- |
| SWRCH40K |
0.37-0.43 |
0.10-0.35 |
0.60-0.90 |
0.030 max. |
0.035 max. |
- |
| SWRCH45K |
0.42-0.48 |
0.10-0.35 |
0.60-0.90 |
0.030 max. |
0.035 max. |
- |
| SWRCH48K |
0.45-0.51 |
0.10-0.35 |
0.60-0.90 |
0.030 max. |
0.035 max. |
- |
| SWRCH50K |
0.47-0.53 |
0.10-0.35 |
0.60-0.90 |
0.030 max. |
0.035 max. |
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Product guarantee availability |
제목 없음
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Dimension
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Production process
symbol
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Size
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Tolerance
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Out-of-round
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| R, RA, SA |
10 or less
10 ~ 16
16 more than |
± 0.4
± 0.4
± 0.5 |
0.4 or less
0.5 or less
0.6 or less |
AIP, SAIP
PASAIP
PSASAIP |
10 or less
10 ~ 16
more than16 |
0, -0.03
0, -0.04
0, -0.05 |
0.010 or less
0.015 or less
0.025 or less |
SAF,
PASAF |
10 or less
10 ~ 16
more than16 |
± 0.3
± 0.4
± 0.5 |
0.030 or less
0.040 or less
0.050 or less |
| Hexagonal |
10 or less
10 ~ 16
more than16 |
0, -0.08
0, -0.09
0, -0.10 |
0.020 or less
0.025 or less
0.030 or less | |
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Decarburization Depth
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Symbol
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Carbon steel
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Alloy steel
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production
process
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size(mm)
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DM-F |
DM-T |
DM-F |
DM-T |
| RA, SA |
10 or less
10 more than |
0.04
0.05 |
0.15
0.20 |
0.04
0.05 |
0.15
0.20 |
SAF,
PASAF |
8 or less
8 ~ 14
14 ~ 20
20 more than |
0.04
0.05
0.06
0.07 |
0.15
0.20
0.20
0.25 |
0.03
0.04
0.05
0.06 |
0.12
0.15
0.20
0.25 |
SAIP
PASAIP |
8 or less
8 ~ 14
14 ~ 20
20 more than |
0.03
0.04
0.05
0.06 |
0.12
0.15
0.20
0.20 |
0.02
0.03
0.04
0.05 |
0.10
0.12
0.15
0.20 | |
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* DM-F : Decarburization Microscope Ferrite
* DM-T :
Decarburization Microscope Total |
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Spheroidized Ratio
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Production process symbol
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Spheroidized Ratio(%)
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| RA, (R)AIP |
- |
| SA, (S)AIP, SCD |
70 ± 10 |
| SAF, SAIP, PASAF, PASAIP, WSCD |
80 Over |
| PSASAIP, SWSCD |
90 Over | |
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Spheroidized ratio limit sample (Steel type:SUJ2)
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Spheroidized Ratio 90%
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Spheroidized Ratio 80%
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Spheroidized Ratio 70%
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CHQ Wire: PSASAIP
CD Bar: SWSCD
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CHQ Wire: SAF/(PA)SAIP
CD Bar: WSCD
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CHQ Wire: SAPP
CD Bar: SCD
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Packing |
제목 없음
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Packing conditions
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Classification
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Packing
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Contents
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| 1 |
Unpacked
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Strapping
at least 4 points with steel bands or steel wire. Protectors attached at each
strapped point. | |
| 2 |
Blanket Packing
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Strapping
at least 4 points with steel bands. Blanket shape packing material. | |
| 3 |
Bundle |
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A
bundle of 2 or more coils. Strapping at least 3 points with steel bands. | |
| 4 |
Wrapping and Bundling
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Bundle,
packing with Polypropylene sandbags. Strapping at least 2 points with steel
bands. | |
| 5 |
Polypropylene sandbags
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Strapping
at least 4 points with steel bands. Packing material: Polypropylene sandbags. | |
| 6 |
Carrier
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Piling products
on carriers. Vinyl or Polypropylene sandbags.
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| 7 |
Double packing
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Strapping
at least 4 points with steel bands. Double packing material. | | |
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Packaging and tag color for products
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Classification
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Package
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Tape
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Product Tag
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HD product
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- |
- |
White
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Commercial Steel
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White
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White
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White
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Carbon Steel
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Yellow
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Yellow
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Yellow
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Alloy Steel
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Blue
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Blue
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Blue
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