Valve welding wire product introduction and operation method List of valve purchase serial number

Valve welding wire product introduction and operation method List of valve purchase serial number

D502 is a titanium calcium coating type 1Cr13 valve surfacing wire, can be used for AC and DC power supply, excellent welding method. The surfacing metal is 1Cr13 semi-metallographic high chromium steel. The surfacing layer has the characteristics of air quenching. Generally, there is no need to carry out the heat treatment process and the strength is symmetrical. It can also be quenched and softened at 750-800℃.
D502 is a titanium calcium coating type 1Cr13 valve surfacing wire, can be used for AC and DC power supply, excellent welding method. The surfacing metal is 1Cr13 semi-metallographic high chromium steel. The surfacing layer has the characteristics of air quenching. Generally, there is no need to carry out the heat treatment process and the strength is symmetrical. It can also be quenched and softened at 750-800℃.
Main application: this is a kind of practical surfacing wire for surface welding, used for surfacing of carbon steel or alloy steel shaft and valve within 450℃.
D507 valve surfacing wire conform to GB EDCR-A1-15
The results show that D507 is the surfacing wire of 1Cr13 valve with low sodium hydrogen coating, and the direct current connection is used. The surfacing metal is 1Cr13 semi-metallographic high chromium steel. The surfacing layer has the characteristics of air quenching. Generally, there is no need to carry out the heat treatment process and the strength is symmetrical. It can also be quenched and softened at 750-800℃.
Main application: this is a kind of practical surfacing wire for surface welding, used for surfacing of carbon steel or alloy steel shaft and valve within 450℃.
D507Mo valve surfacing wire conform to GB EDCR-A2-15
The results show that D507Mo is a 1Cr13 valve surfacing wire of sodium low hydrogen coating. The surfacing metal is 1Cr13 semi-metallographic high chromium steel. The surfacing layer has the characteristics of air quenching. The surfacing metal has high atmospheric strength, excellent heat resistance and abrasion resistance. Such as with D577 welding wire mutual application can get effective anti-abrasion performance. Surfacing process is simple, no heating before welding, no heat treatment process after welding, use direct current electric connection.
Main application: used for surfacing of normal pressure and high pressure globe valve with operating temperature within 510℃. The welding wire shall be applied to the stop valve surface
D577 electrode with mutual application (high pressure gate valve and piston valve respectively with the above two kinds of wire). D507MoNb valve surfacing wire conform to GB EDCR-A1-15
The results show that D507MoNb is 1Cr13 type valve surfacing wire of low sodium hydrogen coating, and the direct current electric connection is selected. Because appropriate Mo, Nb and other stabilizing elements are added in the coating, the surfacing metal has good oxidation resistance and crack resistance.
Main application: for surfacing of middle and low voltage valve with temperature below 450℃.
D512 valve surfacing wire is in line with GB EDCR-B-03
The results show that D512 is a 2Cr13 type valve with titanium calcium coating, and the welding method is excellent. The surfacing metal is 2Cr13 austenitic high chromium steel. The surfacing layer has the characteristics of air quenching, generally does not need to carry out the heat treatment process, the strength is symmetrical, can be hardened at 750-800℃ soft, when heating to 950-1000℃ air cooling or oil quenching can be hardened again.
Main uses 512 is a kind of practical surfacing wire for surface welding, the surfacing layer is harder than D502, more wear resistant, more difficult to produce and process, used for surfacing carbon steel or high alloy steel shaft, saturated steam valve, agitator paddle, helical conveyor leaf, etc.
D516MA valve surfacing wire conform to GB EDCRMN-A-16
The results show that D516MA is a high chromium alloy steel with low hydrogen potassium coating for surfacing welding wire. The surfacing layer metal has good abrasion resistance, high temperature resistance, corrosion resistance and heat resistance. The welding method is simple, no heating before welding, no heat treatment after welding, and the surfacing layer can be cut.
Main application: used for surfacing welding of components affected by water, steam and crude oil under operating temperature within 450℃, such as no.25 steel castings and common high and middle pressure valve protrusions.
D517 valve surfacing wire conform to GB EDCR-B-15
The results show that D517 is the surfacing wire of 2Cr13 valve with low sodium hydrogen coating, and the direct current connection is used. The surfacing metal is 2Cr13 austenitic high chromium steel. The surfacing layer has the characteristics of air quenching, generally does not need to carry out the heat treatment process, the strength is symmetrical, can be hardened at 750-800℃ soft, when heating to 950-1000℃ air cooling or oil quenching can be hardened again.
Main uses 517 is a kind of practical surfacing wire for surface welding, the surfacing layer is harder than D502, more wear resistant, more difficult to produce and process, used for surfacing carbon steel or high alloy steel shaft, saturated steam valve, agitator paddle, screw transport leaves, etc.
D547 valve surfacing wire conform to GB EDCRNI-A-15
The results show that D547 is a CrNiSi type valve with low sodium hydroxide coating and carbon steel core. The surfacing metal is strengthened with silicon to obtain ferrite mechanism with certain metallographic structure, so that it has better abrasion resistance, corrosion resistance, oxidation resistance and other properties.
Main application: used for surfacing of valve protrusion and sealing parts of boiler equipment in power plant at 570℃.
D547Mo valve surfacing wire is in line with GB EDCRNI-B-15
The results show that D547Mo is CrNiSiMo type valve surfacing wire of low sodium hydrogen coating. Direct current connection is used. Surfacing metal has better continuous high temperature abrasion resistance, abrasion resistance and other properties, has higher continuous high temperature strength, excellent heat resistance and fatigue elimination. The time efficiency of surfacing metal improves the actual effect. With the improvement of time efficiency and time length, the strength and abrasion resistance are further improved.
Main application: For surfacing of high pressure valve with operating temperature less than 600℃.
D557 valve surfacing wire conform to GB EDCRNI-C-15
Show that D557 is low sodium hydrogen type coated CrNiSi type valve surfacing welding wire, welding metal with the aid of a lot of silicon in strengthening, to obtain martensitic microstructure, with timeliness when long, strength and abrasion resistance are further ascension, surfacing metal has good corrosion resistance, oxidation resistance and corrosion resistance, choose the direct current (dc).
Main application: For surfacing of high pressure valve with operating temperature less than 600℃.
D577 valve surfacing wire conform to GB EDCRMN-C-15
The results show that D577 is a chromium manganese type valve with low sodium hydroxide coating and carbon steel core. Choose reverse direct current, welding metal type for high chromium manganese austenitic steel, so the strain hardening effect * * *, with good abrasion resistance, has certain atmospheric pressure strength, good heat resistance, such as application, in conjunction with D507Mo can obtain good abrasion resistance, crack resistance is good, the wire welding process simple, heating wire is not, After welding without heat treatment process, surfacing metal cutting performance is excellent.
Main uses: used for surfacing of high-pressure valve protruding surface with operating temperature within 510℃. In globe valve, if used together with D507Mo, the service life will be higher.
Valve surfacing welding wire instruction:
Implement GB984 specification
Surfacing welding is a welding method in which a layer of wear-resistant, corrosion-resistant, high-temperature resistant metal layer is deposited on the surface or edge of the workpiece. To restore and improve the service life of parts, rational use of raw materials, improve commodity performance, cost control has the best economic benefits.
The surfacing work and working conditions are very complicated, so it is necessary to use suitable welding wire according to different regulations. Different products and surfacing wires should adopt different surfacing processing technology in order to get the actual surfacing effect. Cracking is the most common problem encountered in surfacing welding. The key method to avoid cracking is:
1. Stress relief heat treatment process is carried out after welding.
2, heating before welding, control solid layer environment temperature, slow cooling after welding.
3, to prevent double layer surfacing crack, choose low hydrogen type surfacing wire.
4. When necessary, the connection layer between the surfacing layer and the original material shall be surfacing layer (with low carbon equivalent and high ductility wire).
List of valve Purchase Serial number:
Under the condition of the valve figure number choose to buy serial number to a series of English letters, known as the order number, as he is, how to design out key by the pipe diameter and the mode number, interface mode number, valve type number, class number, sealing mode number, number of main parameters, such as circuit board material, Design the valve product number to indicate certain essential characteristics, please use the appropriate product number when ordering to describe your requirements, do not have to express incorrect. Your order should be carried out according to an example, in the valve description, the following is shown as basic understanding.
Below Taichen valve for us to introduce gate valve, globe valve, disc valve, globe valve, check valve, needle valve and other valves order number is how to express, serial number data list for your reference.