Cobalt-based alloy powders are commonly used in laser cladding processes due to their excellent wear resistance, high temperature strength, and corrosion resistance. These alloys typically contain varying amounts of cobalt, chromium, tungsten, and nickel, among other elements, to achieve specific properties. Cobalt 12 Alloy Powder,Cobalt 21 Alloy Powder,Cobalt 6 Alloy Powder,Cobalt Laser Cladding Powder Luoyang Golden Egret Geotools Co., Ltd , https://www.xtcthermalspray.com
Drying equipment classification According to the heating method, the dryer is divided into convection, conduction, radiation, dielectric and other types. Convection dryer, also known as direct dryer, is the use of hot dry media in direct contact with wet materials, to transfer heat in a convective manner, and to take away the generated vapor; Conductive dryers, also known as indirect dryers, use conduction The method transfers heat from the heat source to the wet material through the inter-metal walls. The generated moisture vapor may be removed by vacuum suction, blowing a small amount of purge gas, or condensing on the surface of a separately provided low-temperature condenser. Dryers of this type do not use drying media and have high thermal efficiency. The product is not contaminated, but the drying capacity is limited by the heat transfer area of ​​the metal walls. The structure is also complex and often operates under vacuum. The radiation dryer uses various types of radiation. The device emits electromagnetic waves of a certain wavelength range and is selectively absorbed by the surface of the wet material and converted into heat for drying. The dielectric dryer uses high-frequency electric fields to effect the drying of heat inside the wet material.
Problems to be considered in the selection of drying equipment Physical and chemical properties of the material - form, moisture content, water content, crystal water, particle size, bulk density, viscosity, heat sensitivity, softening point, phase transition point, thixotropy, toxicity, corrosion, odor, Combustibility, explosiveness, static electricity, air permeability, agglomeration, crystal or granules of easy comminution 2. Drying characteristics of the material - drying curve, critical moisture content, equilibrium moisture content under the drying conditions to be selected.
3. Drying production requirements and long-term planning.
4. The impact of material commodity value and drying effect on it. Such as product moisture, pollution, temperature, wear, pulverization, comminution, rehydration ... and other effects on the value of goods.
5. The requirements for the material recovery rate.
6. The sequence of the material drying process. (Involving the state method of giving and placing)
7. Past drying methods for materials or similar products.
8. Available heat sources (coal, fuel oil, electricity, gas, liquefied gas, natural gas)
9. Installation site size, with or without special requirements.
10. Environmental Requirements - Restrictions on dust emission, noise, vibration, odor, volatiles, etc.
11. The amount of procurement funds that may be invested, local labor, land, and energy prices.
12. The user's operator level and maintenance capabilities.
The average annual temperature and humidity in the area.
Through the above introduction, we let everyone know the characteristics of the drying equipment and the issues that need attention in the selection. Only a detailed understanding of these issues can help us choose a satisfactory drying equipment.
The laser cladding process involves melting the cobalt-based alloy powder using a high-energy laser beam and depositing it onto a substrate to form a protective coating. This coating helps to enhance the surface properties of the substrate, such as hardness, wear resistance, and corrosion resistance.
Some common cobalt-based alloy powders used in laser cladding include:
1. Stellite: This is a well-known cobalt-chromium-tungsten alloy that offers excellent wear and corrosion resistance. It is often used in applications where high temperatures and abrasive environments are present, such as in oil and gas drilling tools, valves, and pump components.
2. Tribaloy: Tribaloy alloys are cobalt-based alloys that contain varying amounts of chromium, molybdenum, and silicon. They are known for their exceptional high-temperature strength and resistance to galling, making them suitable for applications in the aerospace, petrochemical, and power generation industries.
3. Haynes alloys: Haynes alloys are nickel-cobalt-chromium-molybdenum alloys that offer excellent high-temperature strength, oxidation resistance, and corrosion resistance. They are commonly used in applications where extreme heat and corrosive environments are present, such as in gas turbines and chemical processing equipment.
These cobalt-based alloy powders are available in various particle sizes and can be tailored to meet specific application requirements. They can be used with different laser cladding techniques, such as powder-fed laser cladding or blown powder laser cladding, depending on the desired coating thickness and properties.
Overall, cobalt-based alloy powders for laser cladding provide enhanced surface properties and improved performa
Drying equipment classification and selection method
Dry equipment classification and selection method Choosing a suitable drying equipment is not an easy task. There are many things we need to consider. We must first make clear our own needs, such as our own production, site, production, material properties, etc. And so on must be considered one by one. Then according to demand, select equipment. The following details for everyone, how to choose a suitable drying equipment.