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[a]https%3A%2F%2Fwww.walkson.com%2Fptaw-welding%2F[/a] #PTAW PTAW Welding WALKSON can provide specially formulated Tungsten Carbide Overlay (TCO) applied by Plasma Transferred Arc Welding (PTAW) process on any casting or fabrication part surface to increase the wear-resistant property of the part. For extremely abrasive applications, the overlay properties in the following chart will be used. The lifecycle of this type of overlay by PATW welding is 5-6 times longer than Chrome Carbide Overlay. Typical Applications of this kind of overlay are Slurry line, slurry pump suction and discharge spool, wear spool, spray nozzles. Why Choose WALKSON PTAW Welding For heavy load applications, the tungsten carbide is 60-70 wt % and the balance is NiB matrix. The particle size of prime carbide is in the range of 60-325 mesh (44-250 micron) with hardness HV 2700-2900. The bulk hardness of NiB matrix is HRC 45-55. This formula is designed for medium to heavy load application. The combination of high hardness of the prime carbide and high toughness of the matrix make the wear products excellent for high-impact applications. Its lifecycle is 5-6 times longer than AR plates. Applications of PTAW Welding Typical Applications of this kind overlay is Rotary screen wear plates, shovel teeth, crusher teeth and liner plates, grinder hammer tips, chutes/hoppers and mining picks. Wear Protection Products-PTAW/Plasma Transferred Arc Welding Machine WALKSON can provide specially formulated Tungsten Carbide Overlay (TCO) applied by Plasma Transferred Arc Welding (PTAW) process on any casting or fabrication part surface to increase the wear resistant property of the part. For extremely abrasive applications, the overlay properties in the following chart will be used. The lifecycle of this type overlay by PATW is 5-6 times longer than Chrome Carbide Overlay. Typical Applications of this kind overlay is Slurry line, slurry pump suction and discharge spool, wear spool, hammer tips, spray nozzles. Overlay Properties WC Matrix Composition (wt%) 70 -75 % Balance Hardness 2700- 2900 HV 60-70 HRC Particle size (micron) 44 - 250 53-198 Overlay Thickness (mm) 3 - 15 mm Bulk Hardness 832 -1076 HV / 65-70 HRC For heavy load applications, the tungsten carbide is 60-70 wt % and the balance is NiB matrix. The particle size of prime carbide is in the range of 60-325 mesh (44-250 micron) with hardness HV 2700-2900. The bulk hardness of NiB matrix is HRC 45-55. This formula is designed for medium to heavy load application. The combination of high hardness of the prime carbide and high toughness of the matrix make the wear products excellent for high-impact applications. Its lifecycle is 5-6 times longer than AR plates Typical Applications of this kind overlay is Rotary screen wear plates, shovel teeth, dragline teeth, crusher teeth and liner plates, grinder hammer tips, chutes/hoppers and mining picks. Overlay Properties WC Matrix Composition (wt%) 60 -70 % Balance Hardness 2300- 2600 HV 45-55 HRC Particle size (micron) 44 - 250 53-198 Overlay Thickness (mm) 3 - 15 mm Bulk Hardness 720-865 HV / 61-66 HRC WALKSON had been create milestone in the year 2021, we successfully applied PTAW Tungsten Carbide Overlay (TCO) on the valve sealing area with 8mm-12mm use stellite 6 cobalt base, this is the first successful trial with such thickness in china, WALKSON become the first company which can applied PTAW Tungsten Carbide Overlay (TCO) for the valve sealing field. What is Plasma Transferred Arc Welding Process? PTA stands for plasma transferred arc welding, which is a natural progression of the GTAW method. It's a simple-to-automate connection approach that produces higher-quality joins and welds by precisely controlling critical welding parameters. It's perfect for surfacing and cladding in heavy sectors including oil and gas, mining, and energy generation. Plasma transfer arc welding is a time-consuming and difficult joining method. It works by inducing a high-density plasma transfer arc, which has enough energy to melt the base metal workpiece and metal filler powder. The pilot arc is first created by ionizing inert gases (argon, helium, hydrogen, etc.) with the tungsten electrode and torch nozzle arc. By discharging plasma gas through the decreasing nozzle, the pilot arc is turned into a transfer arc. The plasma column is essentially throttled to a high temperature, a high jet velocity, and a high energy density. References of PTA Process [1] Plasma transferred arc welding—modeling and experimental optimization. [J] J. Wilden, J. P. Bergmann & H. Frank. December 2006. [2] Microstructure and wear properties of nickel-based surfacing deposited by plasma transferred arc welding. [J] Chen Guoqing, Fu Xuesong, Wei Yanhui, Li Shan, Zhou Wenlong. 15 August 2013, Pages S276-S282. Transferred VS. Non-transferred Plasma Arc Welding The main arc in TPAW is established between the tungsten electrode and the guide electrode. Compared with non-transferred plasma arc welding (NPAW) where one of the arc terminals is a nozzle, the workpiece is not connected to the circuit, and the energy loss is less than NPAW. As the welding current and plasma gas flow rate increase, the diameter of the ablation zone of the TPAW (ie, the energy received by the workpiece) is much larger than the diameter of the NPAW. The MZ area and HAZ area of the TPAW weld are smaller, but the penetration depth of the PAW weld is similar. Under the same parameters, the MZ or HAZ cannot be observed in the NPAW weld, indicating that the total heat input distribution of TPAW is much larger than that of NPAW . This trend provides a possible way to better control the energy of the plasma arc and expand the application of the plasma arc. We can also offer kinds of shovel replacement parts for sale, if you have needs, please contact us.

Shroud

[a]https%3A%2F%2Fwww.walkson.com%2Fproducts%2Fshroud.html[/a] #bucket #shrouds Shroud Cast shrouds are casings used on bucket lip to protect your bucket lip from aggressive wear that can lead to premature bucket failure. These bucket shrouds will help extend the wear life of the bucket lip in most construction and mining applications. WALKSON, a professional ground engaging tools manufacturer, provide lip shroud for both plate lip and cast lip. The cast shroud weight ranges from 50kg to 300kg. Material is low alloy steel. We can manufacture strictly according to customer’s specification. Also, we can provide wear solution for customers. Why Choose WALKSON Shroud Walkson is very experienced in making high quality shrouds. We have been supplying shrouds to mine sites in European, Africa, Russia, Australia, South America, and Canada for brands like caterpillar, Bucyrus, Liebherr, p&h, Terex, узтм, omz, Hitachi, Demag, Doosan, Komatsu, o&k, Uralmash. Choose us you will get the best quality adaptor and a reliable partner.

Rigging Components

[a]https%3A%2F%2Fwww.walkson.com%2Fproducts%2Frigging-components.html[/a] #dragline #rigging Rigging Components WALKSON manufacture most parts of the dragline rigging and structural component for buckets used in the surface mining industry. Whether it is a special component engineered to improve a weak area in your existing rigging or higher quality facsimile of a part you currently run, WALKSON can provide you with competitive pricing and the shortest lead times in the industry. WALKSON is a professional ground engaging tools manufacturer, providing bucket rigging, dump blocks, spreader bars, wire rope sockets, and more. The products manufactured by WALKSON comply with strict quality control standards. We are always trying our best to light the dragline rigging weight and increase the productivity, safety, and part lifecycle. Why Choose WALKSON Rigging Components The dragline rigging parts that we can provide including: Chain Rigging Bucket Castings Bucket Teeth and Adapters Bucket Wear Packages Our engineering team work together with our customer's maintenance team trying to increase the payload by reducing the total weight of conventional dragline rigging by innovation. WALKSON has become a major supplier in China for dragline and mining shovel wear parts to aggregate, surface coal, lignite and phosphate mines around the world.

Ni-hard Wear Liners/ Billets

[a]https%3A%2F%2Fwww.walkson.com%2Fproducts%2Fni-hard-wear-liners-billets.html[/a] #Ni #Hard #Liners Ni Hard Liners/ Billets NiHard is a well-established white iron product alloyed with nickel and chromium to give significant abrasion and impact resistant properties. The structure of NiHard forging components is composed of iron and chromium carbides, fixed in a matrix rendered martensitic by the nickel content. This structure allows NiHard to be utilized in abrasive and high impact conditions found throughout the construction, mining, manufacturing, and mineral processing industries. If you want to know more kinds of shovel components, please visit our website.

Chocky Wear Bars, Wear Buttons

[a]https%3A%2F%2Fwww.walkson.com%2Fproducts%2Fchocky-wear-bars-wear-buttons.html[/a] #Chocky #Bars Chocky Wear Bars, Wear Buttons The unique, formable design of Chocky wear bars and wear button are available in various lengths, grades and sizes and can also be customized as per the client's specific need. Applications for Chocky Bars are wide and varied, ranging from specific wear protection on buckets for loaders, excavators, and draglines machines, or for weld-on hammer tips for the re-cycling industry, or chute linings and rock box edges. These casting components are easy to use and install. They can be bent, cut, and formed to suit different surfaces. The standard is 23mm thick, length is 240mm, width could be from 25mm from 150mm. We can also produce according to your special requests. Why Choose WALKSON Chocky Wear Bars, Wear Buttons Super high level wear resistant ability Custom made size to suit your need Very stable brazing welding quality We can also provide kinds of undercarriage parts for sale, if you have needs, please contact us.

Bimetallic Wear Plates

[a]https%3A%2F%2Fwww.walkson.com%2Fproducts%2Fbimetallic-wear-plates.html[/a] #Bimetallic #Wear #Plates Bimetallic Wear Plates Bimetallic wear plate are unique wear resistant materials in that they combine very high wear resistant qualities of a white iron (ASTM A532 15%CrMo, 700BHN – 63HRc) with a weldable & high impact toughness mild steel through a metallurgical bond to create a product that is exceptionally resistant to impact and abrasion while retaining. The typical property is as below: Tensile Strength 630Mpa Min. Shearing Strength 250Mpa Min. Hardness 63 HRC/700BHN The micro-structure is Carbide + Martensite + Retained Austenite, the carbide’s content is about 41.5%. The bimetallic wear plate, a component made by forging, is widely used in feeder chute and hopper wear protection situations. Why Choose WALKSON Bimetallic Wear Plates Super high level wear-resistant ability Custom made size to suit your need Very stable brazing welding quality We can provide kinds of white iron castings for sale, if you have needs, please contact us.