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Chromium-nickel stainless steel electrode

Chromium-nickel stainless steel electrode

Chromium-nickel stainless steel electrode

 

Chromium-nickel stainless steel electrode concise tables
&Nbsp;  gradesGB standardAWS standardsCoating typesWelding power sourceMain uses
A002E308L-16 E308L-16 Lime Titania type  AC、DC+ For welding low carbon Cr19Ni10 stainless steel structure, can also be used to 0Cr19Ni11Ti working temperature less than 300 corrosion-resistant stainless steel construction, mainly used in synthetic fibers, fertilizer, petroleum equipment manufacturing.  
A022E316L-16 E316L-16 Lime Titania type  AC、DC+ For welding of urea, synthetic fabrics, equipment and the same type of stainless steel structure, can also be used for post-weld heat treatment is not possible in chromium stainless steel and composite, heterogeneous steel and so on.  
A022MoE317L-16 E317L-16 Lime Titania type  AC、DC+ For ultra low carbon 00Cr18Ni12Mo3 stainless steel, can also be used for post-weld heat treatment is not possible in chromium stainless steel and clad steel and welding of dissimilar steels.  
A032E317MoCuL-16  Lime Titania type  AC、DC+ As the weld contains Mo and Cu, in sulphuric acid medium with high corrosion resistance, used for welding synthetic fiber and other equipment in thin, medium concentration sulphuric acid medium of the same type structure of low carbon stainless steel or acid-resistant steel welded Cr10Si3.  
A042E309MoL-16 E309MoL-16 Lime Titania type  AC、DC+ For the same type of extra low carbon stainless steel materials (such as urea synthetic Tower lining) and dissimilar steel welding.  
A052  Lime Titania type  AC、DC+ Reactor for chemical resistance to sulfuric acid, acetic acid, phosphoric acid, separators, can also be used for seawater corrosion resistant steel (00Cr18Ni24Mo5) and the welding of dissimilar steels.  
A062E309L-16 E309L-16 Lime Titania type  AC、DC+ Used in textile, petrochemical equipment manufacture the same type of stainless steel, composite and heterogeneous elements, such as steel, can also be used for nuclear reactors, pressure vessel inner wall layer surfacing welding and the tower.  
A101E308-16 E308-16 Titanium  AC、DC+ For working temperatures below 300 degrees centigrade of Cr19Ni9 and Cr19Ni11Ti welding of stainless steel sheet structure.  
A102E308-16 E308-16 Lime Titania type  AC、DC+ Used to weld corrosion resistance of working temperature is below 300 degrees centigrade of 0Cr19Ni9 and 0Cr19Ni11Ti in stainless steel.  
A107E308-15 E308-15 Low hydrogen type  DC+ For welding temperatures below 300 ° c of 0Cr19Ni9 of corrosion-resistant stainless steel construction can also be welded steels with poor weldability (high chromium steel, etc) as well as surfacing layer on stainless steel surface.  
A132E347-16  Lime Titania type  AC、DC+ Used to weld a corrosion resistance of Ti-bearing stainless steel of a stable 0Cr19Ni11Ti.  
A137E347-15  Low hydrogen type  DC+ Used to weld a corrosion resistance of Ti-bearing stainless steel of a stable 0Cr19Ni11Ti.  
A172E307-16 E307-16 Lime Titania type  AC、DC+ For ASTM307 and other dissimilar metal welding, also used for corrosion-resistant steel and weld the transition layer. Such as hardened steel and high manganese steel.  
A201E316-16 E316-16 Titanium  AC、DC+ For welding in organic and inorganic acids (non-oxidizing acids) media 0Cr18Ni12Mo2 in stainless steel equipment. Can also be used for post-weld heat treatment is not possible of high chromium steel or as a dissimilar steel welding.  
A202E316-16 E316-16 Lime Titania type  AC、DC+ For welding in organic and inorganic acids (non-oxidizing acids) media 0Cr18Ni12Mo2 in stainless steel or as a dissimilar metal welding.  
A207E316-15 E316-15 Low hydrogen type  DC+ 0Cr18Ni12Mo2 stainless steel equipment for low carbon, but also without heat treatment after welding of high chromium steel (Cr13, Cr17), as well as for welding dissimilar steel welding.  
A212E318-16 E318-16 Lime Titania type  AC、DC+ For the important 0Cr18Ni12Mo2, 00Cr17Ni14Mo2 stainless steel welding, such as urea, vinyl equipment, exposure to strong corrosive medium of the workpiece.  
A222E317MoCu-16  Lime Titania type  AC、DC+ For welding Cu-containing stainless steel equipment of the same type.  
A232E318V-16  Lime Titania type  AC、DC+ Welding heat resistance and corrosion resistance of some Cr19Ni10 and 0Cr18Ni12Mo2 stainless steel structure.  
A237E318V-15  Low hydrogen type  DC+ Used for heat resistance and corrosion resistance of some Cr19Ni10 and 0Cr18Ni12Mo2 structure of multi-layer welding of stainless steel.  
A242E317-16 E317-16 Lime Titania type  AC、DC+ For the same type of stainless steel materials and composite steel, welding of dissimilar steels.  
A302E309-16 E309-16 Lime Titania type  AC、DC+ For welding stainless steel, stainless steel lining of the same type, different kinds of steel (Cr19Ni9 with mild steel), and high chrome steel, high manganese steel, etc.  
A307E309-15 E309-15 Low hydrogen type  DC+ Used to weld the same types of stainless steels, dissimilar steel and high chromium steel, high manganese steel, etc.  
A312E309Mo-16 E309Mo-16 Lime Titania type  AC、DC+ For welding resistance to sulfuric acid (s) corrosion of stainless steel containers of the same type, and can also be used for stainless steel liner, composite steel plate and welding of dissimilar steels.  
A312SLE309Mo-16 E309Mo-16 Lime Titania type  AC、DC+ Welding Q235, 20g and Cr5Mo surface aluminized steel parts, can also be used for welding of dissimilar steels.  
A402E310-16 E310-16 Lime Titania type  AC、DC+ For work of the same type under high temperature heat-resistant stainless steel welding, can also be used for hardening of chromium steel (for example, Cr5Mo, Cr9Mo, Cr13, Cr28 etc) and welding of dissimilar steels.  
A407E310-15 E310-15 Low hydrogen type  DC+ For the same type of heat-resistant stainless steel, stainless steel liner welding of dissimilar steels, can also be used to weld Sclerosing Cr5Mo, Cr9Mo, Cr13 Cr28 steel welding.  
A412E310Mo-16 E310Mo-16 Lime Titania type  AC、DC+ For welding heat-resistant stainless steel at high temperature, can also be used to weld stainless steel lining, different kinds of steel. Welding of hardenability of high carbon steels, low alloy steels toughness is very good.  
A422  Lime Titania type  AC、DC+ Rails machine for welding furnace volume Cr25Ni20Si2 on austenitic heat-resisting steel drum can also be used to weld dissimilar steels.  
A502E16-25MoN-16  Lime Titania type  AC、DC+ For welding low alloy quenched and alloy steels, dissimilar steels and rigidity of structures and heat-resistant steel, etc. Quenched 30CrMnSi and stainless steel, carbon steel and its welding of dissimilar steels.  
A507E16-25MoN-15  Low hydrogen type  DC+ For welding low alloy quenched and alloy steels, dissimilar steels and the rigidity of the structure, and the corresponding heat resistant steel and so on. Quenched 30CrMnSi, stainless steel and carbon steel welding.  
A607E330MoMnWNb-15  Low hydrogen type  DC+ For similar work in 850-900 under the condition of high temperature welding materials of stainless steel, as well as the manifold and expansion tube in the hydrogen manufacturing converted furnace (such as Cr20Ni32 and Cr18Ni37 material) welding.  
A902E320-16 E320-16 Lime Titania type  AC、DC+ For sulfuric acid, nitric acid, phosphoric acid and oxidation in acid corrosion media Carpenter20Cb nickel alloy welding.  

Chromium-nickel stainless steel electrodes instructions for use:
&Nbsp;    implementation of the GB/T983-1995 standard
    Chromium-nickel austenitic stainless steel electrode with good corrosion and oxidation resistance, widely used in chemical industry, petroleum, fertilizer, food machinery, medical equipment, and equipment manufacturing. Chromium-nickel stainless steel welding, the carbide precipitation by the repeated heating, thereby reducing corrosion resistance and mechanical properties, so according to the equipment working conditions (temperature and media types) selecting electrode.
&Nbsp;    electrode selection and base metal components should be the same or similar, mainly medium and temperature to select welding rod.
&Nbsp;   1, working temperatures above 300 degrees Celsius, there is a strong corrosive medium, need stability element selection containing Ti or Nb or extra low carbon stainless steel welding rod of medium containing dilute sulfuric acid or hydrochloric acid, often used in stainless steel with Mo and Cu electrode.
&Nbsp;   2, works at room temperature and corrosion resistant, no Ti or Nb stainless steel electrode can be used.
&Nbsp;   3, the carbon content of deposited metal on the corrosion resistance of the stainless steel has a lot of influence, generally used with carbon content not higher than the base metal of stainless steel welding rod or use extra low carbon stainless steel electrodes.

    Stainless steel welding considerations
&Nbsp;   poor weldability of CR stainless steel, Martensitic chromium stainless steel welded with hard brittle, ferritic chromium stainless steel welding under high temperature Crystal grew up easily, which have higher brittleness of weld. CR-NI stainless steel weld is better, but the welding current is easily welded joint intergranular corrosion, welding, weld hot crack problems of stress and deformation increases.
&Nbsp;   1, usually of stainless steel electrode with lime-Titania type and the low hydrogen type two. Welding current DC power supply as possible, redness and can overcome electrode melting depth. Lime Titania type not the coating of the electrode for all position welding, suitable only for flat fillet welding of peace; coating of low hydrogen type electrode can be used for all-position welding.
&Nbsp;   2, the use of stainless steel electrode should be kept dry. To prevent cracks, pits, holes and other defects of lime Titania type coating 150-250 ℃ 1h drying before welding, low hydrogen type welding 200-300 ℃ 1h drying. Cannot repeat the drying, or else the skin easily pulled off.
&Nbsp;   3, welded joints clean and prevents electrode stained with grease and other dirt, so as not to increase the carbon content of weld and the welding quality.
&Nbsp;   4, in order to prevent heat generated intergranular corrosion, welding current should not be too large, should generally be about 20% less than the carbon steel electrode, the arc will not take too long, cold, and narrow weld.
&Nbsp;   5, note when the arc, arc cannot be non-welded parts, use only with the welding arc plate of the same material to arc.
&Nbsp;   6, should be used for short arc welding, arc-length 2-3mm, arc is too long and easy to crack.
&Nbsp;   7, transport should be applied quickly short arc welding, are generally not allowed to sway, the purpose of which is to reduce heat and heat-affected zone, improving the resistance to intergranular corrosion and welds tendency to reduce thermal cracking.
&Nbsp;   8, dissimilar steel welding electrode should be carefully selected to prevent improper electrode selection heat cracks or heat-induced σ phase precipitation, makes metal brittle. Light stainless steel with dissimilar steel welding rod selection criteria for selection, and take the appropriate welding process. 

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