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How to use hot 317 welding rod?
- R317 is a low alloy steel welding rod with low sodium hydrogen type. It can be welded in all positions by DC reverse welding, and the welding process is good. The weldment should be preheated to 250~300 DEG C before welding and should be treated at 700~740 DEG C after welding.s
What kind of welding rod or welding wire for welding Q245R steel?
- Q245R is generally used in boiler or pressure vessel, if it is a large diameter cylinder welding body in wall thickness below 8mm recommended the use of arc welding J507 welding rod, double welding, carbon arc gouging back, to obtain inspection qualified; wall thickness is thick, can be used for submerged arc welding. The use of H08MnA wire HJ431 welding flux;If the smaller diameter of the cylinder, the inner wall of the can go in welding, open V groove on the weld position, the use of manual TIG welding primer (ER50-6 wire), welding electrode (J507 electrode) filling cover, if the wall thickness is more than 10mm, you can also consider the use of submerged arc welding (filling cover H08MnA HJ431 solder wire);If the welding weld is non pressure parts, you can use the CO2 gas shielded arc welding, using 1.2 or 1.6 ER50-6 diameter wire welding, weld spatter if you need better or less, recommend the use of Ar:CO2 mixed gas 8:2 welding.s
Welding rod E5015 and G507 difference
- No, the stainless steel electrode is also the beginning of the Es
Why can DC welding machine weld any electrode?
- General welding rod (acid welding electrode) is both AC and DC dual-use.Basic electrode, recommended DC, AC is also ok.Cellulose electrodes must be dc.So it comes to this conclusion.s
In the pipe welding, a welding rod welding in the replacement of an electrode should be how to deal with joints?
- Pipeline welding joints, is most in need of careful treatment, whether it is single channel multi pass welding or welding, the joint processing is not good, there may be slag, poor fusion welding defects such as weld, resulting in leakage after completion of pressure test;There are two kinds of joint methods after replacing electrode:1 、 hot connection:After stopping quickly changed new electrode, is the ability to remain in the state at the arc, immediately from the pool in front of the arc and the arc pulled at the arc with the rapid arc even (horizontal zigzag) welding, welding to weld arc hole under pressure, a when arc melting groove blunt edge "puff" sound, immediately moved into normal welding method of welding;The main point is to replace the welding rod, the action should be quick, and the joint must be skilled and flexible. It is a commonly used joint method in welding production.2, cold connection:Cited the joint of the slag shall be clean at the arc arc, too high or have evidence to grinding in the gentle slope, and then from the original crater 10mm arc, with long arc slightly preheated with arc welding to the horizontal swing forward arc pit, arc under pressure, when the arc breakdown root hair a "Puff" sound after welding can be transferred to normal.Cold joint advantage is not good when the arc weld (with shrinkage or welding meat too thick), can eliminate the defects and grinding, thin joints, easy to ensure the welding quality; the difficulty is small heat connection; drawback is not as efficient as the thermal connection is high, especially not allowed in grinding joints, (such as skills competition) should not be used this method.s
What's the difference between 506 electrode and 502 electrode?
- Agree with wangjun7307's point of view.s
What is the price of titanium - calcium welding rod and low hydrogen type electrode?
- The calcium titanium electrode and the low hydrogen electrode are the type of electrode. The coating composition of titanium calcium type refers to the electrode with titanium dioxide and calcium carbonate, acidic and low carbon steel electrode, hydrogen electrode is the electrode with low hydrogen material such as low hydrogen sodium or potassium hydrogen based low carbon steel electrode is alkaline. The coating composition is different, so the welding process performance difference is relatively large, acidic carbon electrode process performance is stable, the basic AC / DC arc stability; alkaline and carbon steel electrode because of easily ionized material, arc stability is relatively poor, and many can only adapt to the DC welding welding, the weld metal the hydrogen content is low, so it can ensure the internal quality of weld. As for the price, can not be generalized, titanium calcium welding rod some prices higher than the low hydrogen electrode, but experience, low hydrogen electrode price than titanium calcium type electrode price is higher, about 500-700 yuan per ton. Because I manufacture welding materials.s
What welding rod does 20CrMnTiH use?
- 20CrMnTi is steel carburizing, carburizing steel is usually carbon, low carbon steel 0.17%-0.24%. The car with the drive gear is in manufacturing. The hardenability of Shanghai Kai Xin steel Cr Mn Ti steel to provide pictures infiltration of carbon steel, the higher hardenability, the quenching conditions, with high strength and especially with high toughness, low temperature impact toughness of.20CrMnTi steel surface carburizing hardening. Good processability, small deformation, anti fatigue performance is quite good. Uses: used for gear, shaft, piston type accessories. For cars, aircraft of various special parts. The characteristics and scope of application: performance good carburizing steel, high hardenability, carburizing after quenching with hard and wear-resistant surface and tough heart, has high low-temperature impact toughness, weldability medium, normalizing machinability is good. Used to manufacture the important parts, such as gears, gear rings and gear shafts, that bear high speed, medium or heavy load, impact and friction, which are less than 30mm. 18CrMnTi is widely used as a substitute for steel, carburized parts, in the automotive industry for the tractor. Under the high-speed section below 30mm. In heavy load or impact. And the important carburized parts, such as gear shaft. The friction ring gear. The gear shaft. The spindle. Sliding bearing. The crosshead. Claw clutch worm. Etc.. J857Cr high strength low alloy steel electrode J857Cr high strength low alloy steel electrode line: GB E8515-G AWS E12015-G: Description: J857Cr is a high strength low alloy welding preheating low sodium hydrogen coating 200 after welding tempering 500-700 (or dark red)s
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