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nickel-based alloy powder

  • Material: nickel-based alloy powder
    Other Brands: nickel-based alloy powder
    Source Stock: Customized
    Supplier: Shanghai Hite Special Alloy Co., Ltd.
    Contacts: Mr.KayDuan
    Email: sales02@hitealloy.com

  • nickel-based alloy powder Details



    Nickel based alloy powder is a widely used alloy powder on the market, mainly used for wear resistance, anti-corrosion, rust prevention, etc. of steel parts. The grades are divided into two types: high hardness and low hardness. High hardness is wear-resistant and anti-corrosion, and low hardness is repaired during processing.

    Introduction to nickel based alloy powder

    This powder is the most widely used type of self fluxing alloy powder. It has excellent comprehensive performance, corrosion resistance, oxidation resistance, heat resistance, low stress abrasive wear resistance, and good impact toughness. Low melting point, wide solid-liquid temperature range, strong wetting ability for various matrices and WC particles, and easy operation.

    The self melting, wetting, and spray welding properties are excellent. The spray welding layer has high hardness, corrosion resistance, wear resistance, and heat resistance, making it difficult to cut. Wet grinding is preferred.

    Powder grade representation method

    1. The Chinese pinyin letter F is used in front of the brand to indicate powder. The brand itself consists of three parts.

    2. Use Arabic numerals 1.2.3 to represent base groups, 1-nickel based, 2-cobalt based, and 3-iron based.

    Example: F32-40 [1]

    F represents the alloy powder for spray welding, 3 represents the type of powder (iron based), 2 represents plasma spray welding, and 40 represents the hardness reference value of the spray welding layer.

    Chemical composition of nickel based alloy powder

    Product GradeMain Chemical Components（%）Hardness HRC
    CCrSiBWFeNiCoCuMo
    F101Fe0.30-0.708.0-12.02.5-4.51.8-2.6
    		≤12Remainder


    		40-50
    F1010.30-0.708.0-12.02.5-4.51.8-2.6
    		≤4Remainder


    		40-50
    F102Fe0.60-1.014.0-18.03.5-5.53.0-4.5
    		≤15Remainder


    		≥55
    F1020.60-1.014.0-18.03.5-5.53.0-4.5
    		≤5Remainder


    		≥55
    F103≤0.158.0-12.02.5-4.51.3-1.7
    		≤8Remainder


    		20-30
    F1040.60-1.014.0-18.03.5-5.53.5-4.5
    		≤5Remainder
    		2.0-4.02.0-4.0≥55
    F105FeF102Fe+35% WC≥55
    F105F102+50% WC≥55
    F106≤0.158.0-12.02.5-4.51.7-2.1
    		≤8Remainder


    		30-40
    F108F102+80%WC≥55
    F1090.4-0.814.0-16.03.5-5.03.0-4.0
    		≤15Remainder
    		24.0-26.0
    		≥50


    technical requirement

    1. Please refer to the table for the chemical composition of the powder, hardness of the spray welding layer, and particle size as the assessment indicators.

    Oxygen content and melting point are not used as quality inspection criteria.

    2. Powder size, 70-300 μ m. 50-106 μ M.

    3. Spray method, plasma spray welding, oxygen acetylene spray welding.

    4. The powder has a metallic luster and must not be affected by moisture, deterioration, or contain rust, oil stains, etc.

    Test methods and inspection rules

    The chemical composition, particle size, and hardness of the spray welding layer of the alloy powder should be inspected in accordance with the provisions of JB/T 3168.2 and JB/T 3168.3.

    Inspection rules

    1. Before leaving the factory, the powder must undergo chemical composition, spray welding hardness, and particle size inspection according to the batch number. The qualified batch size shall not be less than 200Kg.

    2. During powder inspection, 5 samples should be taken from different parts of the same batch of powder, with a total weight of not less than 2K, and mixed evenly after merging.

    Then use the subtraction method to reduce to the required amount. When testing the chemical composition, it is recommended to use a particle size of 70-100 μm.

    3. If there are powders that do not meet the standards after inspection, they should be double checked according to the above rules. After re inspection, as long as one of the styles

    If it does not comply with the provisions of this standard, the powder will be judged as unqualified powder.

    Classification

    (1) Nickel chromium alloy thermal spraying powder: There are many types of thermal spraying powder, such as nickel chromium heat-resistant alloy, which is made by adding 20% chromium to nickel. Nickel chromium heat-resistant alloy hardly oxidizes at high temperatures and is a typical coating material that is resistant to heat, corrosion, and high-temperature oxidation. The coating is dense and has good bonding performance with the substrate metal. It is a transitional layer material between the coating and the substrate of materials such as ceramics and soft metals. It can not only increase the ability of the substrate to resist high-temperature gas erosion, but also improve the bonding strength between the coating and the substrate material.

    (2) Nickel chromium iron alloy thermal spraying powder: This type of thermal spraying powder is made by adding appropriate iron to nickel chromium, and its high-temperature oxidation resistance is slightly worse than that of nickel chromium alloy. Other properties are basically similar to nickel chromium alloy, and the outstanding advantage is that it is relatively cheap. Therefore, it can be used as a repair for corrosion-resistant workpieces or as a transition layer thermal spraying powder.

    (3) Nickel chromium boron alloy thermal spraying powder: This alloy contains elements such as boron, chromium, and carbon, with high hardness and moderate toughness. After spraying, its coating has good wear resistance, corrosion resistance, and heat resistance, and can be used for anti-corrosion repair of shafts, pistons, etc.

    (4) Nickel aluminum alloy thermal spraying powder: Nickel aluminum alloy thermal spraying powder is commonly used to lay the bottom layer, and each particle is composed of fine nickel powder and aluminum powder. When spraying, the thermal spraying powder is heated to over 600 degrees Celsius through a flame, resulting in a strong chemical reaction between nickel and aluminum, generating intermetallic compounds and releasing a large amount of heat. At the same time, some aluminum also oxidizes, generating more heat. At this high temperature, nickel can diffuse into the substrate metal, which can significantly improve the bonding strength of the coating. Another significant feature of nickel aluminum composite thermal spraying powder is the rough surface of the coating formed after spraying, providing an ideal surface for connecting other spraying materials. The expansion coefficient of nickel aluminum composite thermal spraying powder is similar to that of most steels, making it an ideal intermediate coating material.

    Nickel based alloy powder usage

    Suitable for oxygen acetylene flame or plasma spray welding processes, commonly used for preventive protection and repair of corrosion-resistant, wear-resistant, and especially sliding wear resistant parts, such as wire drawing drums, cams, plungers, and conveyor rolls of steel rolling mills.

    Precautions:

    1. Please strictly follow the requirements of oxygen acetylene flame or plasma spray welding process for welding.

    2. When using small and medium-sized spray welding guns, it is advisable to choose powder with -150 mesh, and when using large spray welding guns, it is advisable to choose powder with -150/+320 mesh.

    3. If the alloy powder exhibits moisture absorption or has a storage period of more than 3 months, it should be dried before use (120 ℃, insulation for 2 hours).