Product Description
Portable spot welding machine uses the resistance welding method in which welding parts are assembled into lap joints and pressed between two columnar electrodes, and the base metal is melted by resistance heat to form solder joints.
| Item/models | Unit | DN2-31X | DN2-31C | DN2-40X | DN2-40C | DN2-63X | DN2-63C |
| power at 50% | KVA | 31 | 31 | 40 | 40 | 63 | 63 |
| Maximum short circuit current | KVA | 14 | 14 | 18 | 18 | 20 | 20 |
| Secondary unload voltage | V | 5.58 | 5.58 | 6.8 | 6.8 | 7.9 | 7.9 |
| Voltage at 50Hz/60Hz | V | 380 | 380 | 380 | 380 | 380 | 380 |
| Distance between the arms | MM | 168-288 | 100 | 168-328 | 100 | 168-428 | 100 |
| Max.strength at electrodes | N | 3000 | 3000 | 3500 | 3000 | 3500 | 3000 |
| Working stroke | MM | 15-45 | 15-25 | 15-45 | 15-25 | 15-45 | 15-25 |
| Max.stroke of cylinder | MM | 70 | 50 | 100 | 50 | 100 | 50 |
| Max. arm length | MM | 750 | 350 | 1000 | 450 | 1100 | 500 |
| Compressed Air supply | MPA | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Max thickness of mild steel sheet with min.length s arm | MM | 3+3 | 3+3 | 4+4 | 4+4 | 5+5 | 5+5 |
| With 500mm arms | MM | 2+2 | 2+2 | 3+3 | 3+3 | 3+3 | 3+3 |
| With maximum length arms | MM | 1.2+1.2 | 1.2+1.2 | 2+2 | 1.8+1.8 | 2.0+2.0 | 2.0+2.0 |
| Cross wire maximum | MM | 14+14 | 14+14 | 16+16 | 16+16 | 20+20 | 20+20 |
| Cooling water pressure drop | MPA | 0.2-0.3 | 0.2-0.3 | 0.2-0.3 | 0.2-0.3 | 0.2-0.3 | 0.2-0.3 |
| Cooling water flow | L/MIN | 4 | 4 | 4 | 4 | 4 | 4 |
♦ Distance,angle and length of welding arm can be made according to customers' requests.
Features:
1. Light weight, easy to operate and save electricity
2. Compact structure and easy maintenance
3. The turntable is equipped with bearings and rotates 360°
4. Customized welding tongs, the longest welding arm is 1300mm and the shortest is 220mm
5. Less wearing parts and high cost performance
Working Principle
The workpiece is pressurized and energized between the upper and lower electrodes, and having resistance welding.
When the resistance of the welding part is R (Ω), the welding current is I (A), and the power on time is t (sec), according to the formula: the current I that the metal material with a certain resistance value R passes through within a certain time t heats up due to the resistance, and the heat generated is Q. The metal resistance current is used to heat the molten metal, and then the metal is cooled, crystallized and connected under pressure. This is called resistance welding.
Welding Arm Can Be Customized
Welding Process
a) Pressurization time: It is appropriate to electrify the welding after the workpiece is firmly pressed by the electrode. The welding process is started before the workpiece is firmly pressed by the electrode, which is easy to cause burning loss and splash of the electrode or workpiece. The length of the working stroke of the electrode, the movement of the pressurizing mechanism, the deformation of the workpiece and other factors affect the setting of the pressurization time. Generally, the pressurization time is set to 15-20 cycles;
b) Holding time: used for metal cooling and recrystallization, generally set as 15-20 cycles;
c) Rest time: It is mainly used for continuous spot welding. The appropriate rest time can ensure the effective rest of the welding machine and operators.
Frequently Asked Questions
1. When can you arrange shippment?
The shippment is 15 days after getting deopsit, but customized machines should be more than 25 days.
2.Do you inspect the finished products?
Yes, each step of production products will be came out inspection by QC department before shipping.
3.Are you factory?
Yes, we are factory, all machine is made by ourself and we can provide customize service according to your requirement.
4.How to buy your Spot Welder?
Please send us inquiry to our email, and we will give you a PI to send us payment.
5. How to contact you?
You can send a mail for us and call us.
6.How will you deliver my goods to me?
We always ship by air and sea in the mean time.
7.How about your transport packing? Is it possible to damage the machine during the transportation?
We have rich experience on international transportation. All the packing are extra thickness carton filling with protective PE foam and waterproof membrane. No damage happened during transportation until now.
8.What kind of payment do you accept?
T/T, Western Union, PayPal, .L/C, D/A, etc.
