Q:What is the corresponding brand number of electrode model E55?

J50 series, such as J502, J507, J506 and so on

Q:What welding rod should be used for welding between No. 20 and No. 45 steel?

J427When welding, pay attention to the small current at the bottom, and the weldability of No. 45 steel is poor

Q:See the red welding electrode, don't know what is added inside?

What kind of paint does the red arc welding electrode add inside?:The red component is iron oxide. This kind of coating is mainly made of iron oxide and is called iron oxide electrode.

Q:12 chromium vanadium molybdenum with what electrode?

R312 welding rod or welding wire, model is E5503-B2-V,Or R317 electrode or wire, the model is E5515-B2-V.

Q:Why do welding electrodes need heating?

The moisture in the skin of the drying agent prevents the welding from producing hydrogen pores when the water is heated.

Q:Why stainless steel electrode is relatively short?

The reason is that the stainless steel electrode relative to the general structure of the electrode, the resistance is relatively large, if it is too long, lead to resistance heat is too large, welding electrode to the final red too much, the performance can not be guaranteed!

Q:How much is the electric welder with 4 mm electrode?

250A above welding machine can, and the specific price depends on what type of machine, more than 1500 yuan

Q:How to calculate the amount of electrode used in pipe welding?

According to the wall thickness of the pipe and the groove at the butt joint, the weld height is calculated, and the sectional area is calculated. According to the circumference of the pipe, the volume of a weld is calculated. The volume of the corresponding welding wire is the amount of the weldIt can also be multiplied by the number of welds and the amount of each opening. The dosage of the cut can be calculated by the quota method or the volume method. Generally, a ton of steel has an average number of electrodes.

Q:Why should the electrode be dry?

Welding rod often causes the deterioration of the process performance due to moisture absorption, resulting in unstable arc, splash, and easy to produce porosity, cracks and other defects. Therefore, the electrode must be strictly dried before use. The drying temperature of ordinary acid welding rod is 150--200 DEG C, the time is 1 hours. The drying temperature of basic electrode is 350--400 degrees centigrade, the time is 1--2 hours. After drying, it is placed in the incubator of 100--150 DEG C, and it is used as caries

Q:What welding rod steel

General cast iron electrode can be, but to do a good job preheating and welding insulation, in addition, the welding material itself is different, you should pay attention to, it is better to have data to talk, can you provide casting material?