1. Material |
No. |
Material |
1.1 |
High manganese steel like ZGMn13,stainless steel,aluminum,or custom |
2. Product size and tolerance |
No. |
Specification |
Size |
Tolerance |
2.1 |
Outer Diameter (mm) |
≤500, or customized |
±1.5, or as per drawing |
2.2 |
Inner Diameter (mm) |
≤450, or customized |
±1.5, or as per drawing |
2.3 |
Wall Thickness (mm) |
6 to 6.4, or customized |
±0.3, or as per drawing |
2.4 |
Height (mm) |
≤450 or customized |
Max ±1.5, or as per drawing |
2.5 |
Inner chamfer radius (mm) |
≥2 |
±1, or as per drawing |
2.6 |
Outer chamfer radius (mm) |
≥4 |
±1, or as per drawing |
3. Chemical composition for materials |
No. |
Number |
Chemical Composition (%) |
C |
Si |
Mn |
P |
S |
Fe |
3.1 |
Mn13 |
0.90-1.20 |
0.30-0.80 |
11.00-14.00 |
≤0.035 |
≤0.030 |
85.0-88.0 |
4. Mechanical properties |
No. |
Number |
Yield Strength
(Mpa) |
Tensile Strength
(Mpa) |
Elongation
(%) |
Initial Hardness
(HB) |
Hardness after Hardening (HB) |
Impact at 20℃
(J) |
4.1 |
Mn13 |
≥400 |
≥800 |
≥40% |
≥200 |
≥400 |
≥90 |
5. Surface finish and other properties |
No. |
Item |
Description |
5.1 |
Surface finish |
The surface shall be smooth,clean and free from any contamination that cannot be readily removed by cleaning agents normally used in manufacturing |
5.2 |
Surface roughness (Ra) |
from 30um to 3.2um depending on detailed requirement |
5.3 |
Manufacturing Process Brief |
Material preparation→Deep drawing (or spinning)→Reshaping→Surface treatment |
5.4 |
Raw material source |
TAIYUAN IRON & STEEL (GROUP) CO.,LTD. Or Baosteel Group Corporation,etc. |
6. Packing,Shipping and others |
No. |
Item |
Description |
6.1 |
Packing |
To be packed in wooden crate |
6.2 |
Marking |
Each box to be legibly marked with the name of the manufacturer or supplier, the designation of material,condition,dimensions and weight |
6.3 |
Shipping tools |
Ship goods by van to departune port then by sea to desitination port |
7.Quality management and spot management |
No. |
Item |
Description |
7.1 |
Quality control |
1. Quality assurance
a. Incoming material quality assurance; b. Process quality assurance; c. First sample quality assurance; d. Final quality assurance.
2. Process management-The right results are from the right process
a. Production process card control; b. Standard operational procedure;c.Job certification;d. Quality chart monitor.
3. Equipment and facility management
a. Periodic maintenance; b.Preventative maintenance.
4. Mold management
a. Mold life management; b.Periodic and preventative maintenance; c. Periodic inspection. |
7.2 |
Inspection Tools |
Altimeter,Vernier caliper,Micrometer,3D coordinate measuring instrument |
7.3 |
Spot management |
"5S" management (sort,set in order,shine,standard,sustainable). |