• f
  • t
  • g
  • y
  • in
Technical Ceramics


Ceramic Welding Guide Pins

Technial Ceramics are used to make the welding guide pins, which are used for projection welding and resistance welding in automotive industry. Ceramic pins are electrical insulated and high thermal shock resistant. Besides, they can be used up to 1,200 degree C. So they offer much longer service life and higher economic efficiency.
  • Material

    : Si3N4 & ZrO2
  • Color

    : Black & Blue & White
  • Max. Service Temperature

    : 1,200 degree C
Inquiry now
Product Detail

● Description of Ceramic Guide Pins

UNIPRETEC manufactures a comprehensive range of silicon nitride, sialon and zirconia advanced ceramic weld location and control pins. These are used in the metal forming industry to allow precise welding of nuts to sheet metal.

Si3N4 Silicon Nitride ceramic possess a number of characteristics, such as excellent mechanical, thermal and chemical properties, making them ideal in metal forming applications. Silicon nitride weld location pins have a proven history of success of more than 20 years by several leading automotive manufacturers.

Zirconia ceramic weld location pins are a more recent addition to our portfolio. They excel where their greater toughness is required, such as when severe impact is a possibility. Like YSZ Zirconia, it has excellent wear resistance, however they are not recommended where thermal shock may occur. Also, they are double the weight of an equivalent Si3N4 weld pin. We make a whole range of none standard sizes, so please contact us with your enquiry.

● Features of Ceramic Weld Pins

 √ Fewer Cold Welds
 √ Electrical Insulation
 √ Higher Energy Efficiency
 √ Improved Weld Precision
 √ No Welding Spatter Adhesion
 √ High Thermal Shock Resistance
 √ Using Temperature up to 1,200°C/2,190°F
 √ 25x Longer Service Life than KCF Material

● Material Properties of Ceramic Pins

Silicon Nitride
Main Content
- 99% Al2O3    
- Ivory
White / Blue  
Black / Grey
5.95 3.22
Vickers Hardness
17 12 15
Flexural Strength
360 800 580
Compressive Strength
Electrical Resistivity
Dielectric Strength
17 9 19
Dielectric Constant
1 MHz
9 28 9.6
Thermal Conductivity
29 2.2 27
Max. Working Temperature
°C / °F
1,650 / 3,000
800 / 1,470
1,200 / 2,190
Resistance to Thermal Shock
Thermal Expansion Coefficient (25 - 1,000 °C)
7 - 9
11 - 13
3 - 4

∆ The data is offered for reference only, exact data will vary depending on producing method & part configuration.

Request a free quote

If you have questions or suggestions, please leave us a message,we will reply you as soon as we can!

Hot Products
  • boron nitride nozzle

    Boron Nitride Ceramic Nozzle For Metal Powder Gas Atomization

    BN-2300, one of hexagonal boron nitride based composite, is an ideal materials for an atomizer nozzle, thanks to its high strength, high melting point, high toughness, outstanding thermal shock resistance, excellent machinability and low-friction properties. BN-2300 nozzles for the atomizing process can ensure a continuous flow with no blockage or breakage happening at that level.

  • Ceramic Grinding Media

    Ceramic Grinding Media Balls Beads

    Ceramic grinding balls have been extensively used in high-speed milling applications for blending, grinding, and dispersing. Additionally, ceramic balls and beads are used as abrasive media for ceramic raw materials and glazes in ceramic factories, cement factories, enamel factories, and glass work due to their superior density, stiffness, and wear efficiency.

  • Alumina Ceramics

    Alumina Ceramic Parts

    Alumina parts are made of aluminum oxide, which is one of the most important and versatile materials in the field of oxide ceramics. This material therefore used in a wide range of applications. The alumina ceramic from UNIPRETEC has a Al2O3 purity up to 99.8%. Due to the fine structure of the material and its high surface quality, an unsurpassable combination of properties can be achieved.

  • Ceramic Welding Roll

    Ceramic Si3N4 Welding Rolls for Steel Tube Industry

    silicon nitride ceramics is an inorganic non-metallic material. It is a super-hard material, which has lubricity and is wear-resistant; except for hydrofluoric acid, it does not react with other inorganic acids. It is highly corrosive and resistant to oxidation at high temperatures. Moreover, it can resist high thermal shocks. It will not crack when heated to over 1,000°C in the air, cooled rapidly and then heated rapidly. Because of the excellent characteristics of Si3N4 ceramics, it’s often used to manufacture bearings, turbine blades, mechanical seal rings, permanent molds and other mechanical components. In the field of welding of copper stainless, and aluminum tubes, silicon nitride ceramic rolls have natural advantages.

  • boron nitride setters

    Ceramic Boron Nitride Setters for Nitride Ceramics Sintering

    Boron Nitride can be compared to graphite thanks to lubrication capacities, good thermal conduction and easy machinability, although it's white and has good electrical insulation. Plus, it isn't wetted by most molten metals and can therefore be used as a container for most molten metals.

  • Alumina ceramic sintering aid for MIM

    High Purity Alumina Ceramic Sintering Aid for MIM Components

    Ceramic kiln furniture has two basic properties - firstly dimensional stability at high temperatures and secondly thermal shock resistance. UNIPRETEC is professional manufacturer of High Purity Alumina Ceramic Kiln Furniture(Trays, Setter Plates, Saggers).

Related products
Ceramic Welding Guide Roll
Si3N4 Silicon Nitride Ceramic Guide Roll For HF Tube And Pipe Welding
UNIPRETEC is good at producing standard and customized Si3N4 Silicon Nitride Guide Roll for high frequency electric resistance welding. Typical Si3N4 properties are: high thermal shock resistance, high service temperature, excellent electrical insulated, high wear and corrosion resistance. Si3N4 weld guide rolls improve the surface finish of the tube and reduce scrap rates, by using Ceramic Guide Rolls, customers benefit from reduced down time, better process efficiency and higher yields.
Si3N4 Silicon Nitride Ceramic Sliding Shoes Blocks for Induction Hardening Machines
Silicon Nitride Ceramic exists high hardness, high mechanical strength and wear resistance at high temperature, so Silicon Nitride is an ideal material for sliding shoes and blocks in induction hardening system.
Paper Dewatering Foils
Si3N4 Silicon Nitride Ceramic Paper Dewatering Foils
Silicon Nitride Ceramic is hard and chemical inert, which makes Si3N4 a perfect wear and corrosion material. Besides, Silicon Nitride has very high thermal shock resistance. So Silicon Nitride is typically used to make Paper Dewatering Foils.
Silicon Nitride Ceramic Hook
Si3N4 Silicon Nitride Ceramic Hook for Hot Dip Aluminising
In the molten metal handling industry, hot-dip aluminising is a process for improving the metals' corrosion and wear resistant properties, Ceramic Hooks made of Silicon Nitride is used in this process.
silicon nitride parts
GPSN Si3N4 Silicon Nitride Ceramic Parts
Silicon Nitrides (Si3N4) feature an excellent combination of material properties. They are nearly as light as silicon carbide (SiC), but their microstructure gives them excellent thermal shock resistance and their high fracture toughness makes them resistant to impacts and shocks.
silicon nitride bushing
GPSN Si3N4 Bush Silicon Nitride Ceramic Bushing
Silicon Nitride Ceramic exists high hardness, high mechanical strength and wear resistance at high temperature.
silicon nitride rod
GPSN Si3N4 Silicon Nitride Ceramic Rods
Silicon Nitride ceramic's unique properties of high strength, superior fracture toughness and excellent hardness provides a unique engineering material solution for many project's extreme environments and demanding mechanical / structural requirements.
silicon nitride tube
GPSN Si3N4 Silicon Nitride Ceramic Tubes
The unique combination of material properties of Silicon Nitride makes it ideal for applications with high dynamic stresses, thermal rigor, and demanding reliability requirements, meanwhile, it provides advantages in severe-service applications such as turbines and high-end ball bearings.
our Partners
Customer CTS
Customer ERAMET
Partner Magna
Customer INDO-MIM
Partner Knowles Electronics
Customer HealthCap
chat now
If you have questions or suggestions, please leave us a message,we will reply you as soon as we can!

Online Service