Characteristics of Sytop Cobalt Chrome Alloy for Welding Rods

Cobalt Chrome Alloy electrode base material casting cobalt-based superalloy is largely dependent on carbide strengthening. Pure cobalt crystals are densely packed hexagonal (hcp) crystal structures below 417 ° C and converted to fcc at higher temperatures.

In order to avoid this transformation of the cobalt alloy during use, virtually all of the cobalt alloy is alloyed with nickel to stabilize the structure from room temperature to melting point temperature. Cobalt alloy has a flat fracture stress-temperature relationship, but it exhibits excellent hot corrosion resistance at temperatures above 1000 °C, which may be due to the higher chromium content of the alloy, which is one of these alloys. feature.

In cast Cobalt Alloy Plate , the carbide particle size is related to the cooling rate, and the carbide particles are relatively fine when cooled. In the sand casting, the hardness of the alloy is lower and the carbide particles are coarser. In this state, the abrasive wear resistance of the alloy is significantly better than that of the graphite casting (the carbide particles are fine), and the adhesive wear resistance is both There is no significant difference, indicating that coarse carbides contribute to improved abrasive wear resistance.

The main carbides in cobalt alloys are MC, M23C6 and M6C. In cast Cobalt Alloy , M23C6 precipitates between grain boundaries and dendrites when slowly cooled. In some alloys, fine M23C6 can form a co-crystal with the matrix γ. The MC carbide particles are too large to directly affect the dislocations, so the strengthening effect on the alloy is not obvious, and the finely dispersed carbides have a good strengthening effect. The carbides located on the grain boundaries (mainly M23C6) can prevent the grain boundary from slipping and improve the permanent strength. The microstructure of the cobalt alloy HA-31 (X-40) is a dispersed strengthening phase (CoCrW) 6 C type. carbide.

The Strengthening Phase of Cobalt Chrome Alloy Wire

Cobalt Alloy wire is made of cobalt as a main component, containing a considerable amount of nickel, chromium, tungsten and a small amount of alloying elements such as molybdenum, niobium, tantalum, titanium, niobium, and occasionally iron. Depending on the composition of the alloy, they can be made into welding wire. The powder can be used for hard surface surfacing, thermal spraying, spray welding, etc., and can also be used for casting and forging parts and powder metallurgy parts.

Generally, Cobalt Alloy Plate lack a coherent strengthening phase. Although the medium temperature strength is low (only 50-75% of nickel-based alloys), it has higher strength, good thermal fatigue resistance, hot corrosion resistance and resistance at temperatures above 980 °C. Abrasive performance and good weldability. Suitable for the production of air jet engines, industrial gas turbines, guide vanes and nozzle guide vanes for marine gas turbines, and diesel engine nozzles.

Dispersion strengthening is a means of strengthening a material by adding hard particles to a homogeneous material. It refers to a metal material reinforced with an ultrafine second phase (reinforced phase) insoluble in a base metal. In order to distribute the second phase uniformly in the base metal, it is usually produced by a powder metallurgy method. The second phase is generally a high melting point oxide or carbide, nitride, and its strengthening can be maintained to a higher temperature.

Dispersion strengthening is a method of strengthening the alloy with a large effect, and it has a promising future. If the compound is dispersed or grainy in the solid solution grains, the strength and hardness of the alloy can be significantly improved, and the plasticity and toughness can be reduced little. The finer the particles, the more dispersed and evenly distributed, and the better the strengthening effect.

The HS111 Cobalt Chrome Alloy surfacing welding wire is a kind of Co-Cr-W surfacing alloy with low C and W content and good toughness. It can withstand the impact under hot and cold conditions, has a low tendency to crack, and has good corrosion resistance, heat resistance and wear resistance. It is mainly used to maintain good wear resistance and corrosion resistance when working at high temperatures, such as high temperature, high pressure valves, hot shear blades, hot forging dies, etc.

3 Points to Purchase Cobalt Chrome Alloy Welding Wire

Cobalt Alloy welding wire, HS101 high chromium cast iron surfacing wire surfacing layer hardness HEC48-54 Main features and uses; Surfacing layer has good oxidation and cavitation resistance, high hardness and good wear resistance. Used in applications requiring strong wear and oxidation resistance, such as roller shaft bit shaft, coal hole excavator, crusher roller, mixing blade and other surfacing. HS103 high chromium cast iron surfacing wire (including boron). The surfacing layer has excellent anti-oxidation and cavitation resistance, and the hardness is high. The wear resistance is good. HS103 is a high-chromium cast iron welding wire containing boron. The surfacing layer is hard to cut and wear with hard alloy tools stronger.

When purchasing Cobalt Alloy Blade wire, consider the physical properties, mechanical properties and chemical composition of the weldment material:

  1. For the welding of structural steels, generally consider the principle of equal strength and select the welding consumables that meet the mechanical properties of the joints.
  2. For dissimilar steel welded joints between low carbon steel and low alloy steel, the corresponding welding materials for steels with lower strength grades are generally selected.
  3. For the welding of heat-resistant steel and stainless steel, in addition to considering the strength, it is also considered that the main chemical composition of the weld metal is close to the chemical composition of the base metal.

When the chemical constituents of the base metal are high in harmful impurities such as carbon or sulfur or phosphorus, the welding material with strong crack resistance should be selected. Such as low hydrogen type welding consumables.

In China, the most important grades for Stellite Alloy are: Hayness 188, Haynes 25 (L-605), Alloy S-816, UMCo-50, MP-159, FSX-414, X-40, Stellite 6B. Etc., Chinese brands are: GH5188 (GH188), GH159, GH605, K640, DZ40M and so on. Unlike other superalloys, the cobalt alloy is not reinforced by an ordered precipitate phase that is firmly bonded to the matrix, but consists of an austenitic fcc matrix that has been solid solution strengthened and a small amount of carbide distributed in the matrix.

Development of Cobalt Chrome Alloy Welding Wire

In the process of welding, the Cobalt Chrome Alloy welding wire must be welded to the transition layer. After the completion of the welding, the wear layer should be surfacing. Before the welding, the preheating work should be carried out before the welding, so that the welding must be carried out before the welding. After the layer is completed, the wear layer is surfacing, and the preheating work before welding is performed before the welding, so that the temperature of the inside and outside of the flux cored wire is about the same, the wire is used for cleaning, and again, the position of the welding is adjusted. Then, turn on the power of the welder and adjust the position of the wire so that the wire is covered with the edge of the flux. In this way, the flux-cored wire is not so easily damaged, which is also a kind of improvement of construction efficiency.

In recent years, in the context of rapid economic growth, the sales of wear-resistant welding wire has been relatively good, because the economy is developing, then our industry will definitely grow rapidly under the premise of economic growth. The wear resistant wire has good anti-abrasive wear resistance, impact abrasion resistance and adhesive wear resistance. High temperature wear resistance, corrosion and wear resistance and excellent resistance to composite wear of more than two types.

Wear-resistant Cobalt Alloy welding wire is constantly developing in China. At the same time, in the continuous innovation of accompanying technology, for the use of wear-resistant welding wire, we must first pay attention to the similarities and differences between the wear-resistant welding wire and the solid welding wire in the process, as well as the gas-shielded welding in the wear-resistant welding wire. The difference between self-shielded welding and secondly, it is necessary to pay attention to the type of core of the wear-resistant welding wire and some characteristics of the welding.

Ordinary wear-resistant Cobalt Alloy Blade wire has a continuous gap on the side of its steel skin due to the constraints of its manufacturing form. Therefore, the wear-resistant cobalt alloy wire should not be left too long after opening the package to prevent excessive moisture absorption and affect the welding quality.

Sytop Stellite Alloy 12 (Applications and Features)

Cobaltalloy offers variety of Stellite Alloy 12 products which can meet your multifarious demands. We adhere to the management principles of “quality first, customer first and credit-based” since the establishment of the company and always do our best to satisfy potential needs of our customers.

Application of Sytop Stellite Alloy

Material Choose Typical Application Process
Co 06 Steam and chemical valve seat , oil and gas pump sleeve, ,butterfly valve bushing ,hot-dip galvanized production line used bushing etc. Powder metallurgy & investment casting

Product Features of Sytop Stellite Alloy 3

1.High temperature resistance

The strength keeps stable up to 800℃ and it can even momentarily used at 1200℃.

2.Wear resistance

Due mainly to the unique inherent characteristics of the hard carbide phase dispersed in a

CoCr alloy matrix, it has exceptional wear and galling resistance.

3.Corrosion resistance

This exellent and lovely property allows this kind of material parts to be used in oil&gas, slurry, acid liquid and any other mediums.

Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force. Welcome your visit.

Sytop Stellite Alloy 12 (Applications and Features)

Cobaltalloy offers variety of Stellite Alloy 12 products which can meet your multifarious demands. We adhere to the management principles of “quality first, customer first and credit-based” since the establishment of the company and always do our best to satisfy potential needs of our customers.

Application of Sytop Stellite Alloy

Material Choose Typical Application Process
Co 06 Steam and chemical valve seat , oil and gas pump sleeve, ,butterfly valve bushing ,hot-dip galvanized production line used bushing etc. Powder metallurgy & investment casting

Product Features of Sytop Stellite Alloy 3

1.High temperature resistance

The strength keeps stable up to 800℃ and it can even momentarily used at 1200℃.

2.Wear resistance

Due mainly to the unique inherent characteristics of the hard carbide phase dispersed in a

CoCr alloy matrix, it has exceptional wear and galling resistance.

3.Corrosion resistance

This exellent and lovely property allows this kind of material parts to be used in oil&gas, slurry, acid liquid and any other mediums.

Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force. Welcome your visit.

Applications of Sytop Stellite Alloy Products

SYTOP cobalt based alloy/ Stellite Alloy is a range of cobalt-chromium-tungsten alloys designed for wear resistance, corrosion resistance and high termal resistance. It has excellent wear and corrosion resistance performance at relatively high temperature. It is widely used in oil&gas, metallurgy, machinery, wood cutting, automotive, paper and food processing industries etc.

STELLITE 6 is the most widely used of the wear resistant cobalt-based alloys and exhibits good all-round performance. It is regarded as the industry standard for general-purpose wear resistance applications

Applications

Oil&gas industry

Steel&steel processing industry

Food processing industry

Refineries industry

Pulp&paper industry

Chemical&petrochemical industry

Industrial customized components made of stellite alloy

SYTOP cobalt based Stellite Alloy 12 is a range of CoCrW or CoCrMo alloys designed for wear resistance, corrosion resistance and high termal resistance. Whether rods, plates or customized parts, you can find your needs here.

Classification Knowledge of Cobalt Alloy Electrode

Cobalt Chrome Alloy electrode classification.

According to different situations, there are three classification methods for cobalt alloy electrodes: classification according to the use of welding rods, classification according to the main chemical components of the coatings, and classification according to the characteristics of the slag after melting of the coatings.

According to the use of welding rods, cobalt alloy welding rods can be divided into: structural steel welding rods, heat-resistant steel welding rods, stainless steel welding rods, surfacing welding rods, low-temperature steel welding rods, cast iron welding rods, nickel and nickel alloy welding rods, copper and copper alloy welding rods, aluminum and Aluminum alloy electrode and special purpose electrode.

If classified according to the main chemical composition of the electrode coating, the Cobalt Alloy electrode can be divided into: titanium oxide electrode, titanium oxide calcium electrode, ilmenite electrode, iron oxide electrode, cellulose electrode, low hydrogen type. Welding rods, graphite electrodes and salt-based electrodes.

If the characteristics of the slag are classified according to the characteristics of the slag after melting, the Cobalt Alloy Plate electrode can be divided into an acid electrode and a basic electrode. The main component of the acid electrode coating is an acidic oxide such as silica, titania, or ferric oxide. The main component of the alkaline electrode coating is an alkaline oxide such as marble or fluorite.

  1. The electrode type is divided according to the mechanical properties of the deposited metal, the type of coating, the welding position and the type of welding current.
  2. The electrode type is compiled as follows: the letter “E” indicates the electrode; the first two digits indicate the minimum tensile strength of the deposited metal; the third digit indicates the welding position of the electrode. “0” and “1” indicate that the welding is applicable to all Position welding (flat, vertical, vertical, horizontal), “2” means that the welding rod is suitable for flat welding and flat welding, “4” means that the welding rod is suitable for downward vertical welding; when the third and fourth digits are combined, it means welding Current type and type of coating. After the fourth digit, “R” is attached to indicate that the moisture-absorbing electrode is attached; “M” is added to indicate that the electrode is resistant to moisture absorption and mechanical properties; and “-1” is added to indicate that the impact performance has special specifications.

How to Deal With the Moisture of Cobalt Alloy Electrode

Cobalt Alloy electrode deposited metal has excellent comprehensive heat resistance, corrosion resistance and oxidation resistance, and can maintain high hardness at temperatures above 600 degrees.When the cobalt alloy electrode deposited metal contains 25-33% of chromium, it has oxidation resistance, and when it contains 3.0-14% of tungsten, it has high temperature strength.

The Cobalt Chrome Alloy electrode is composed of a welding rod core and a coating. One of the functions of the cobalt alloy electrode is to conduct electricity as an electrode, and it is also the main material for forming the weld metal. Therefore, the quality of the cobalt alloy electrode directly affects the performance of the weld. The materials are specially made of high-quality steel, welded carbon steel, cobalt alloy electrode core is usually 0.08% C low carbon steel, the most widely used H08 and H08A carbon content and sulfur, phosphorus harmful impurities are extremely The strict limit of the commonly used cobalt alloy electrode diameter (ie the diameter of the cobalt alloy electrode core) is 2.5~6 mm, and the length is 350~450mm. Although the electric cobalt alloy electrode has the ability to resist external damage under normal circumstances, it cannot be ignored. Bad is easy to suffer damage.

For wetted cobalt alloy electrodes, the following methods can be used:

1. For those who are seriously damp and peel off, they should be scrapped.

2. It can be dampened but not very severe. When welding, if the phenomenon of detachment of the agglomerated skin and the pores on the surface of the weld are not found, the welding quality is basically guaranteed.

3. If all kinds of welding rods only have slight rust spots on the welding core, the welding quality can basically be guaranteed according to the results of various tests. However, for the cobalt alloy welding rods used for important projects, they should be degraded after rusting.

Introduction to the Stellite Alloy Band Saw Blade

What is a Stellite Alloy band saw blade? This is what many friends who want to buy a stellite alloy band saw blade want to know. Let’s introduce the stellite alloy band saw blade.

First of all, the stellite alloy band saw blades have different materials and different structures, and are generally made of insert-welded structure. The tip of the stellite alloy band saw blade has high hardness and high wear resistance. High fatigue resistance and other advantages, while the disadvantages of the stellite alloy band saw blade are mainly brittle, low strength and not resistant to impact.

Secondly, not all of the Stellite Alloy 3 band saw blades can be harvested in the processing of superalloys, and can only be harvested when the choice is reasonable and used properly. Get the desired results.

Moreover, the stellite alloy band saw blade has high hardness, toughness, wear resistance and red hardness. In our production and processing, we only need to target hard-to-cut materials such as titanium alloy, superalloy, cast iron and so on.

Through some simple and rough introductions, I think that everyone has already had a certain understanding of the stellite alloy band saw blade, so when you go to buy the stellite alloy band saw blade, it is estimated that there is already a standard in mind. Use this standard to judge that this is not suitable for us to use.

The utility model relates to a stellite alloy band saw blade which is simple in structure, convenient in processing and low in cost, and is composed of a saw blade and a saw tooth at the edge of the band saw blade, and is characterized in that the sawtooth is fixed on the edge of the band saw blade. Carbide tooth block.

Compared with the prior art, the Stellite Alloy 12 band saw blade has a process of simplifying the process of processing the saw blade because of the connection of the carbide tooth block on the saw tooth, and is easy to operate, thereby saving a large amount of processing equipment.