High-performance silicon nitride slides for induction hardening machines

Overview of Silicon Nitride Slides for Induction Hardening Machines

Silicon Nitride Slide is a mechanical part made of silicon nitride ceramic. Silicon Nitride Slide for Induction Hardening Machines has high hardness, strong abrasion resistance, and can withstand frequent friction and impact, to ensure the long-term stability of the slide work. High temperature resistance, good thermal stability, can be adapted to the high temperature environment in the quenching process, reducing thermal deformation. Good insulation can avoid the current interference during induction quenching. In addition, Silicon Nitride Slide has strong chemical stability and is not easily corroded by quenching liquid, which improves the reliability and service life of the equipment and enhances the precision and efficiency of the quenching process.

Features of Silicon Nitride Slides for Induction Hardening Machines

Silicon Nitride Slide for Induction Hardening Machines has the following significant features:

High Temperature Resistance and Thermal Stability: Induction hardening process generates a large amount of heat, Silicon Nitride Slide can withstand high temperature, small coefficient of thermal expansion, in the rapid cold and hot environmental changes, can still maintain stable size and performance, not easy to be deformed or cracked due to thermal stress, to ensure the quenching process precision and stability.

High hardness and wear resistance: Silicon nitride is extremely hard and has excellent wear resistance. In the induction hardening machine, the slider needs to frequently drive the workpiece to move; a silicon nitride slider can withstand this long-term friction and wear, maintain a good surface finish and precision, reduce the workpiece positioning error caused by slider wear, extend the maintenance cycle and service life of the equipment.

Good insulation properties: induction hardening machine work when there is a strong electromagnetic field, silicon nitride has good insulation properties that can prevent current leakage, to avoid potential safety hazards to the equipment and operators, but also reduce electromagnetic interference, to ensure the normal operation of the equipment and the stability of the quenching quality.

Strong chemical stability: the quenching liquid and other media used in the quenching process may have a certain degree of corrosiveness, Silicon Nitride slider has excellent corrosion resistance, will not be eroded by the quenching liquid, and can maintain stable performance in the harsh chemical environment, to ensure the reliability and service life of the slider.

Specifications Table of Silicon Nitride Slide for Induction Hardening Machines

Item	Typical Value
Material	Silicon nitride ceramic
Color	Black or grayish-black7
Density	\(3.1 – 3.3\ g/cm^3\)4
Hardness	HRA 90, Vickers hardness (HV50) > 15503
Modulus of elasticity	280 – 310 GPa8
Flexural strength	600 – 800 MPa7
Compressive strength	2000 – 3500 MPa
Fracture toughness	4 – 6 MPa·m\(^{1/2}\)5
Maximum service temperature	1200 °C in air2
Thermal conductivity	15 – 20 W/(m·K)3
Thermal expansion coefficient	\(3.1 – 3.3\times10^{-6}/°\)C
Volume resistivity	> \(10^{12}\) Ω·cm3
Dimensional accuracy	Up to ±0.003 mm7
Surface finish	Up to Ra 0.03

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Applications of Silicon Nitride Slides for Induction Hardening Machines

Silicon Nitride Slide for Induction Hardening Machines has important applications in the following areas:

Precise positioning of the workpiece: Induction hardening requires precise position control of the workpiece to ensure the accuracy and consistency of the quenched part. With its high-precision manufacturing process and good dimensional stability, the silicon nitride slider can accurately locate the workpiece and accurately transport it to the induction heating area to ensure the positional accuracy of each quenching, thus improving the stability of product quality.

Carrying and transferring workpieces: In the process of induction hardening, it is necessary to transfer workpieces to different stations, such as the heating station and quenching station, in a fast and smooth manner. Silicon nitride slider has high strength and carrying capacity, can withstand the weight of the workpiece, and in the transmission process to maintain a smooth transmission, avoid workpiece shaking or offset, to ensure that the quenching process is carried out smoothly.

Adaptation to complex motion: The workflow of an induction hardening machine may involve a variety of complex forms of motion, such as linear motion, rotary motion, and so on. Silicon nitride slider can be flexibly designed according to the requirements of the equipment, which can adapt to different motion modes, provide accurate motion trajectory for the workpiece, and meet the diversified needs of the induction hardening process.

Improvement of production efficiency: it can realize fast and efficient workpiece transfer, reduce the running time and energy consumption of the equipment, and at the same time, reduce the downtime due to the failure of the slider, so as to improve the overall production efficiency of the induction hardening machine.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. The company exports to many countries, such as the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are interested, please send an email to sales1@rboschco.com

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5 FAQs of Silicon Nitride Slides for Induction Hardening Machines

Q1: What types of induction hardening machines are silicon nitride sliders suitable for?

Silicon nitride sliders are suitable for the following scenarios: Type of workpiece: shafts, gears, disks, and other workpieces that require precision positioning. Equipment type: high frequency, medium frequency, ultra audio, and other types of induction hardening machines, especially suitable for automated production lines. Industry field: automobile manufacturing, aerospace, machining, semiconductor, and other industries that require high precision and reliability.

Q2: How does the silicon nitride slider achieve accurate positioning?

Silicon nitride slider ensures the positioning accuracy in the following ways: high precision processing: adopting a precision grinding and polishing process, the surface roughness can be up to Ra0.1μm or less, with the accuracy of the guide rail up to ±0.005mm. Dimensional stability: low coefficient of thermal expansion, minimal dimensional changes in high-temperature environments, to avoid positioning deviation due to thermal deformation. Structural design: Dovetail groove, T-slot, and other structures can be customized to match the equipment guide rail and reduce clearance errors closely.

Q3：How to extend the service life of silicon nitride slider?

The following measures can be taken: Lubrication and cleaning: Use high temperature resistant lubricant (such as molybdenum disulfide) regularly to avoid wear caused by dust or quenching liquid residue. Avoid overload: Strictly control the load to avoid exceeding the rated load capacity of the slider (usually 50-200N/mm). Temperature control: Ensure the working temperature does not exceed the recommended range to prevent oxidation or softening at high temperatures. Regular inspection: Check the wear of the slider surface every quarter, and replace the slider with more than 0.1mm wear in time.

Q4: How long is the service life of the silicon nitride slider?

Under normal use conditions, the service life of the silicon nitride slider can be 2-5 years. For example, Zhejiang Shangshi Silicon Polytechnic’s silicon nitride lift tube has a service life of more than 1 year in aluminum melt, which is far better than traditional cast iron or refractory materials. With proper maintenance, the life of some high-precision sliders can be extended to more than 5 years.

Q5: Can silicon nitride slider replace graphite slider?

Silicon nitride sliders can completely replace graphite sliders in induction hardening machines, and the advantages are significant: longer life, graphite sliders are easy to oxidize and have a life of only 3-6 months, while silicon nitride sliders can last more than 2 years. Higher precision: graphite is easy to wear and leads to positioning deviation, while silicon nitride has high hardness and can still maintain precision in long-term use. No impurity contamination: graphite chips may contaminate the workpiece, while silicon nitride is chemically stable and will not affect the quenching quality.