What is the meaning of manual butt welder?

The manual butt welder has small size, simple operation and low price. In the work of plastic pipe welding, if the strength requirements are high, it must be butt jointed, since after butt welding, the joints performs just like a whole pipe.

How to use manual butt welder?

What are the manual butt welder methods?

What should we pay attention to when using manual butt welder?

How to use manual butt welder?

Pay attention to the following when using manual butt welder:

Adjust the distance between the two jaws. When turning the adjusting screw to make the control lever at the left limit, the jaw spacing shall be the difference between the total extension length and extrusion amount of the two weldments. When the manual butt welder lever is at the right limit, the distance between jaws shall be the total extension length of two weldments plus 2 ~ 3mm, which is the original position before welding.

Adjust the short-circuit limit switch so that it can automatically cut off the power supply at the end of welding (reaching the predetermined extrusion amount).

According to the shape of the weldment, adjust the jaws so that the two jaws are at the same level, and then clamp the weldment.

In order to prevent the instantaneous overheating of the weldment, the adjustment stage shall be increased step by step during the test welding, and the appropriate secondary voltage shall be selected. In flash butt welding, higher secondary voltage should be used.

In order to avoid overheating of manual butt welder parts during welding, the cooling water valve must be opened for water before welding. In order to facilitate inspection, a funnel is set in front of the left side of the manual butt welder, which can directly observe the water flow, so as to check whether there is cooling water flowing inside the welder.

What are the manual butt welder methods?

The welding process of manual butt welder, according to the working principle of manual butt welder, can be divided into resistance butt welding and flash butt welding:

Resistance butt welding is to heat the end joints of the steel bar to a plastic state and then cut off the power supply, and then heat to reach the plastic connection. This welding process is prone to oxidation and slag inclusion at the joints, and requires the section of the steel bar to be smooth and flat. At the same time, it consumes a lot of electricity during welding and requires high power of the welding machine, so it is rarely used.

Flash butt welding refers to the spraying of molten metal particles from the end joints of the steel bars during the welding process, showing sparks (ie flashes). When the molten metal is sprayed out, oxides and slag inclusions are also brought out, so that the butt welding joint has good quality, so it is widely used, especially for the butt joint of low-carbon steel and low-alloy steel.

What should we pay attention to when using manual butt welder?

The operator of manual butt welder must be trained professionally, be familiar with the structure, performance and operating procedures of manual butt welder, and master the knowledge of process parameter selection, quality inspection specifications, etc.

Before operation, check whether the mechanisms of manual butt welder are sensitive and reliable, whether the electrical system is safe, whether the cooling water pump system has water leakage, and whether all lubricating parts are well oiled.

This is the relevant knowledge about the manual butt welder for you. If you want to order a manual butt welder, you must choose WELPING Industry Co., Ltd., because they can provide the most high-quality and cheap manual butt welder.