What kind of electrode is high chromium steel plate, and can high chromium alloy be welded

How about the welding performance of ZG60 Report |2012-2-20 22:18 Asked by: Anonymous |Views: 18.

The main thing is the welding performance.

2012-2-22 22:42 Satisfied The welding performance is very poor, especially after heat treatment, nitriding treatment, we have welded nitriding treatment, it is very difficult! Finally, MG600TIG welding wire is used.

mg600(mg600tig)

MG600 is a highly versatile, high-efficiency, high-strength Indonickel alloy electrode (welding wire) with excellent plasticity, toughness, and crack resistance, and is suitable for almost all kinds of common steels. It has excellent welding process performance, stable arc, easy slag removal, less spatter, and uniform and beautiful weld.

Uses: Suitable for welding tools and molds, high-speed tool steels, hot work tool steels, manganese steels, cast steels, T-1 steels, shock-resistant steels, vanadium-molybdenum steels, spring steels, martensitic stainless steels, austenitic stainless steels, ferritic stainless steels, unknown steels, and welding between various types of steels. For example, it is used for high-pressure valves, the removal of broken bolts, the modification of shafts, etc., and the effect is very ideal.

mechanical properties of welded joints;

Experimental Items Experimental results.

Tensile strength of 124,000 psi (pounds square inches) or 855 Newtons square millimeters.

Yield Strength 103,000 psi (pounds square in) maximum, or 710 Newtons square millimeters.

Elongation max. 22

Brinell hardness After welding, HB300 works hardening.

Hello, high chromium alloy can be welded. Welded with stainless steel electrodes for argon arc welding. The most common problem encountered in hardfacing welding is cracking, and the main ways to prevent cracking are:

1. Preheating before welding, controlling the temperature between layers, and cooling slowly after welding. 2. Stress relief heat treatment is carried out after welding. 3. To avoid cracking during multi-layer surfacing welding, use low-hydrogen surfacing welding electrodes.

4. If necessary, surfacing the transition layer between the surfacing layer and the base metal (with a welding rod with low carbon equivalent and high toughness). There is a direct relationship between cracking and the carbon content and alloying elements of the workpiece and weld deposited metal, so the preheating temperature is generally estimated based on the carbon equivalent of the electrode used. The carbon equivalent formula is as follows:

CEQ=C 1 6Mn 1 24Si 1 5Cr 1 4Mo 1 15Ni This estimation formula is suitable for low, medium, and high carbon steels and low-alloy steel materials. Carbon equivalent (%)Preheating temperature Carbon equivalent (%)Preheating temperature 100 or more 250 More than 150 More than 300 More than 200 More than 350 <>

This electrode can be bought there.

Low-hydrogen electrodes are preferred when welding high-carbon steel, and ultra-low-hydrogen electrodes are better.

The welding process of high-carbon steel is easy to form martensite, hardenability increases accordingly, that welding must be easy to cause problems, low-hydrogen electrode can maximize the reduction of cracks, and preheating before welding is also necessary, at the same time, the welding consumables are dried and insulated according to the manufacturer's requirements, the insulation barrel must be kept above 70 degrees, and the secondary drying must be controlled at the same time, in addition, slow cooling after welding is very necessary, post-welding heat treatment is very important, proper baking, and use insulation to wrap the weld, This minimizes defects and relieves stress.