We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears manufacturing unit in China with 5 distinct branches. For much more specifics: Cellular/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
one.Descriptions
| Identify | Black Phosphated Cold Drawn Seamless Tube St35/St37.4/E235+N |
| Specification | DIN2391-ninety four/C, EN10305-1, EN10305-4, SAE J524, GB/T3639-2009 |
| Metal Quality | St35, St37.4, St45, St52.4, E235, E255, E355 |
| Size | OD:3-76mm, wall thickness: .5-6mm |
| Length | 4m,6m or tailored |
| Delivery Problems | NBK(+N), BK(+C), GBK(+A), BKW(+LC), BKS(+SR) |
| Attributes | large cleanness within wall, No deformation after chilly bending, no crack following flaring and flattening, challenging geometrical forming and machining can be realized |
| Apps | Used in hydraulic program, car Mobile: +86~13 0571 88828 and in the situation the place the large precision, brightness, cleanness and mechanical houses of the tube are required |
| Packing | Plastic film & Knitting Bundled, Plywood Scenario or as ask for |
| Supply Time | twenty-30days right after get confirmed |
2. Chemical Composition (ca EPT investigation
| Steel Gr. | Steel No. | Chemical Compositions(%by mass) | |||||
| C(max) | Si(max) | Mn | P(max) | S(max) | Al(min)Whole | ||
| St35, St37.4(E235) | one.0305 | .seventeen | .35 | ≥0.forty | .571 | .571 | .015 |
| St45(E255) | one.0408 | .21 | .35 | ≥0.forty | .571 | .571 | .015 |
| St52, St52.4(E355) | one.0508 | .22 | .55 | ≤1.60 | .571 | .571 | .571 |
3. Mechanical Houses (at place temperature)
| Steel Gr. | Steel No. |
BK | BKW | BKS | GBK | NBK | |||||||
| Rm MPa |
A % |
Rm MPa |
A % |
Rm MPa |
ReH MPa |
A % |
Rm MPa |
A % |
Rm MPa |
ReH MPa |
A % |
||
| Min | Min | Min | Min | Min | Min | Min | Min | Min | Min | Min | |||
| St35(E235) | one.0305 | 480 | six | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 340-470 | 235 | 25 |
| St45(E255) | one.0408 | 580 | 5 | 520 | 8 | 520 | 375 | twelve | 390 | 21 | 440-570 | 255 | 21 |
| St52(E355) | one.0508 | 640 | four | 580 | 7 | 580 | 420 | ten | 490 | 22 | 490-630 | 355 | 22 |
four. Production Stream Chart
Crucial Processes Descriptions:
Cold Rolling
Tube rolling makes use of compression to minimize the measurement of seamless tubes. It utilizes 1 or two sets of rol EPT with consistent
cross-segment grooves on the circumference of the tube. The rol EPT are driven by rack and pinion gears of distinct
radii alongside profiled cams, completing numerous 360º rotations about the tube
Tube rolling is a really specific method of lowering quite slender walled and/or scaled-down diameter tubes, and is typically utilised
as the ultimate chilly functioning step. By rolling, we’re able to obtain outstanding manage more than dimensional tolerances
and floor end while also reducing substance decline and strengthening the metal’s microstructure.
Cold Drawing
Chilly drawing reduces the diameter by pulling the tube by means of a die that is smaller than the tube. In buy to in shape the tube
into the die, one particular conclude is swaged thus lowering the diameter of the foremost stop ahead of drawing. Up coming, the narrowed
conclude is passed through the die and clamped to a drawing trolley which pul EPT the tube through the die.
Annealing
Annealing is used to soften the metal prior to even more cold working or fabrication procedures, and improves the overall
metallurgical microstructure of the tube. In the course of tube reduction or cold drawing, it can become difficult and considerably brittle.
To be in a position to draw the tube once more, stresses fashioned during cold operating require to be taken out to return the materials to its
regular state.
In the course of annealing the tube is heated to a managed temperature and soak time. By means of this process the tube remains in
form, but the grains in the structure of the tube reform into a standard unstressed pattern. The ensuing annealed tube is
softer and ideal for redrawing
Straightening
Drawing and annealing normally results in some diploma of bowing, creating a slight bend in the tubing. In get to
make the tubes straight, we use multiple roll mechanical straighteners to apply this procedure, Straightening can
introduce slight modifications to the measurement and mechanical properties of the tubing, so these aspects are very carefully
managed throughout the process.
five. Inspection and Exams
We examine all plenty of tubing just before shipment to make certain that each and every facet of the customer’s buy has been satisfied.
Our in-property inspection and checks capabilities consist of:
- Chemical Composition Take a look at
- Visual inspection
- Dimensional inspection
- Surface area roughness testing
- Eddy Present tests
- Hydrostatic pressure tests
- Destructive mechanical testing:
– Yield Power
– Tensile Power
– Elongation
– Hardness testing
– bending, flattening, and flaring
All shipments include a full Te EPT Certificate displaying all required te EPT final results and verifying compliance with the order specifications.
6. Packing and Shipments
7. Purposes
We – EPG Team the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 various branches. For far more particulars: Cell/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828 The use of authentic gear manufacturer’s (OEM) element figures or logos , e.g. CASE® and John Deere® are for reference purposes only and for indicating product use and compatibility. Our company and the shown alternative components contained herein are not sponsored, accredited, or made by the OEM.
