MD-300 spot welder description

Spot Welder Machine Portable precision Micro computer control battery welding machine using double point flow welding principle, work two electrode pressure work piece so that the two layer metal electrodes in two under pressure to form a certain contact resistance.

And the welding current from the electrodes through another electrode contact resistance in two points forming the instantaneous heat welding.The welding current moment from the other electrode along the two work pieces flow with the electrode to form a loop, and the internal structure of the parts to be joined.

Main technical parameters , MD-300 spot welder machine

The relation between Welding current and spot welder machine

Welding current set by the user, welding time by calculus . Generally, welding current keep

at 50, the welding time in about1-3ms . The relationship between the current and the time is
as follows:

Welding time(%) 10  20  30  40  50  60  70 80  90 100
Weldingtime(ms)1.4 2.0 2.5 2.9 3.3 3.6 4.0 4.3 4.6 5.0

Welding pulse and welding current setting

A. Welding current setting : In normal welding mode, directly press the "↑" or "↓" key to set welding current. The program automatically save the setting after turning off

B. Light description: power light is on when welding, power light flash not welding.

MINGDA MD-300 spot welding machine , nickel thickness 0.01 to 0.3mm

Applicable instructions

A. Power Switch: turn the switch up ,the power on. Turn the switch down, the power cut off.

B. Work instructions: Turn on the power switch. If the light flashing, it is work.

C. Welding current: setting current, its range is 00-99. a general welding current is set at about 25.

D. Fuse holder: 15A fuse in the lower left corner of the electrical box.

E. Welding switch: it is in the head of machine, when the solder needle down to the weldment and the switch closed, the welder is going to work, this switch is easy to be broken.

Operation, MD-300 spot welder machine

A. Height adjustment of Welding needles : loosing the height adjustment screw with a wrench. Then adjust or replace the length of needles exposed below the electrode(usually, it is about 15mm. It is easy to deform if it is too long) finally, tightening the screws
B. width adjustment of Electrode (needles) : loosing the width adjusting screw with a wrench, then adjust two electrodes so that two needles to appropriate distance. Last, tightening the screws.
C.Test: test whether there is coke on the needles or not., if so. you need to clear it with a file or abrasive paper. then using the right foot press pedals . When its head drop, stare the welding needles until the needle is on the welding point
D. Power: put plug into a 220V power socket, and turn on the power switch, indicator flashing, the welder is work. If working indicator does not shine or shine without flashing. turning off the power then turn on again.
E. In order to ensure good quality of welding, you should often adjust needles and keep it in a good condition.

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Previous services for pallet wrapping machine :

1. Providing professional technical support.

2. Send the product catalog and instruction manual.
3. If you have any question PLS contact us online or send us email, we promise we will give you a reply at the first time!
4. Personal call or visit are warmly welcome.

Sale of services for small spot welder machine :

1. We promise honest and fair, it's our pleasure to serve you as your purchasing consultant.

2. We guarantee punctuality, quality and quantities strictly implement the terms of contract...

3. 24hr Online Customer service, please e-mail / QQ/ Skype us ( Please contact us anytime!)

4. Attend and hold Exhibitions, we attach great importance to promote the product.

5. In many cases,  we won't let shipping cost becomes a burden to you.

After-sales service for dual pulse spot welder machine :

1. Where to buy our products for one year warranty and life long maintenance.

2. 24-hour telephone service.

3. A large stock of components and parts, easily-worn parts

MINGDA is one of the biggest manufacturer for battery spot welder machine , We can do the OEM for customers , And we already have sold large orders to many large factory . So our spot welder is mostly suitable for the big battery packs , And we also have the best after sell service .

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