We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears manufacturing unit in China with 5 different branches. For far more specifics: Cellular/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
1.Descriptions
| Name | Seamless Cold Drawn EPT Steel Tube-EN10305-4(DIN 2391-C/ DIN 2445-2) |
| Specification | DIN2391-ninety four/C, EN10305-1, EN10305-4, SAE J524, GB/T3639-2009 |
| Steel Quality | St35, St37.4, St45, St52.4, E235, E255, E355 |
| Size | OD:3-76mm, wall thickness: .5-6mm |
| Length | 4m,6m or custom-made |
| Supply Problems | NBK(+N), BK(+C), GBK(+A), BKW(+LC), BKS(+SR) |
| Attributes | substantial cleanness inside of wall, No deformation following cold bending, no crack following flaring and flattening, challenging geometrical forming and machining can be understood |
| Programs | Utilized in hydraulic system, auto Cell: +86~13 0571 88828 and in the celebration the place the high precision, brightness, cleanness and mechanical qualities of the tube are required |
| Packing | Plastic film & Knitting Bundled, Plywood Situation or as request |
| Supply Time | 20-30days after get verified |
two. Chemical Composition (ca EPT evaluation
| Steel Gr. | Steel No. | Chemical Compositions(%by mass) | |||||
| C(max) | Si(max) | Mn | P(max) | S(max) | Al(min)Complete | ||
| 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) | 1.0508 | .22 | .55 | ≤1.sixty | .571 | .571 | .571 |
3. Mechanical Properties (at space 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) | 1.0305 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | twenty five | 340-470 | 235 | 25 |
| St45(E255) | one.0408 | 580 | five | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440-570 | 255 | 21 |
| St52(E355) | one.0508 | 640 | four | 580 | seven | 580 | 420 | ten | 490 | 22 | 490-630 | 355 | 22 |
four. Manufacturing Flow Chart
Key Procedures Descriptions:
Cold Rolling
Tube rolling uses compression to reduce the dimension of seamless tubes. It utilizes one or two sets of rol EPT with consistent
cross-part grooves on the circumference of the tube. The rol EPT are pushed by rack and pinion gears of various
radii together profiled cams, completing numerous 360º rotations close to the tube
Tube rolling is a really precise method of reducing very thin walled and/or smaller diameter tubes, and is typically utilised
as the last chilly operating stage. By rolling, we’re ready to achieve outstanding management more than dimensional tolerances
and floor end even though also reducing content reduction and strengthening the metal’s microstructure.
Chilly Drawing
Cold drawing lowers the diameter by pulling the tube through a die that is more compact than the tube. In order to in shape the tube
into the die, 1 finish is swaged thus minimizing the diameter of the leading end ahead of drawing. Up coming, the narrowed
stop is passed by means of the die and clamped to a drawing trolley which pul EPT the tube by way of the die.
Annealing
Annealing is utilized to soften the steel prior to additional chilly doing work or fabrication processes, and enhances the all round
metallurgical microstructure of the tube. For the duration of tube reduction or chilly drawing, it can turn into tough and considerably brittle.
To be in a position to attract the tube again, stresses formed in the course of cold working want to be taken off to return the material to its
typical condition.
Throughout annealing the tube is heated to a controlled temperature and soak time. Via this approach the tube stays in
condition, but the grains in the framework of the tube reform into a regular unstressed pattern. The resulting annealed tube is
softer and suitable for redrawing
Straightening
Drawing and annealing normally benefits in some diploma of bowing, creating a slight bend in the tubing. In purchase to
make the tubes straight, we use a number of roll mechanical straighteners to employ this process, Straightening can
introduce slight adjustments to the size and mechanical qualities of the tubing, so these facets are very cautiously
managed throughout the method.
5. Inspection and Checks
We examine all tons of tubing before cargo to make sure that each facet of the customer’s order has been satisfied.
Our in-home inspection and checks capabilities incorporate:
- Chemical Composition Take a look at
- Visual inspection
- Dimensional inspection
- Surface roughness screening
- Eddy Recent testing
- Hydrostatic strain tests
- Destructive mechanical tests:
– Yield Toughness
– Tensile Power
– Elongation
– Hardness tests
– bending, flattening, and flaring
All shipments contain a complete Te EPT Certificate showing all necessary te EPT results and verifying compliance with the get needs.
six. Packing and Shipments
seven. Applications
We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 various branches. For a lot more details: Cellular/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828 The use of authentic tools manufacturer’s (OEM) portion quantities or logos , e.g. CASE® and John Deere® are for reference functions only and for indicating item use and compatibility. Our company and the outlined substitute parts contained herein are not sponsored, authorized, or manufactured by the OEM.
