About Us
A new material enterprise focusing on new product development, large-scale production, metal powders sales and application terminal support of gas atomization powder manufacturing process technology.
Brazing Process Solutions
1. Brazing Process Unveiled
Process Principle
Through metal powders (filler metals) with melting points lower than the base material 450 ℃ ~1200 ℃ melting and penetrating, achieving atomic-level metallurgical bonding of dissimilar materials, maintaining the structural integrity of the workpiece with advanced joining technology.
1. Essence of Brazing Process
Definition:
By heating to 450-1200℃ (below the melting point of the base material), the metal powder filler melts and fills the joint gap by capillary action, forming a precise connection with atomic-level metallurgical bonding.
Three Core Technical Elements:
1. Temperature Control: precisely matching the filler metal liquidus line ( ±10℃ range control)
2. Gap Design: 0.05-0.2mm Optimal capillary gap (different material matching database)
3. Interface Reaction: filler metal / and base material elements mutually diffuse to form 3-8μm transition layer
2. Brazing Process Classification
Process Type |
Temperature Range |
Typical Applications |
Tianjiu Compatible Filler Metals |
Soft Brazing |
180-450℃ |
Electronic Circuits / Jewelry |
Sn-Pb/In-Sn Alloys |
Hard Brazing |
450-900℃ |
Automotive / Refrigeration Equipment |
Ag-Cu-Zn/Ni-Cr System |
High-Temperature Brazing |
900-1200℃ |
Aero Engines |
Au-Ni/Pd Base Alloys |
2. Tianjiu Brazing Material Matrix
1. Silver-Based Filler Metals :
Silver-based filler metals are alloys primarily composed of silver or silver-based solid solutions. They feature low melting points, excellent wetting and gap-filling properties, strength, plasticity, electrical conductivity, and corrosion resistance. They can be used to braze almost all ferrous and non-ferrous metals except aluminum, magnesium, and other low melting point metals. After adding active elements, they exhibit excellent wettability to diamond, graphite and carbon, cubic boron nitride ceramics, etc., thus widely applied.
To improve the process performance, economy, and environmental friendliness of filler metals, such as lowering melting points, enhancing wettability, and reducing silver content, alloying elements like zinc, tin, nickel, cadmium, indium, titanium, etc., are usually added to form ternary or multicomponent alloys.
Application Fields :
Widely used in vacuum electronic components, air conditioning and refrigeration equipment, motors, automobiles, instruments and meters, electrical equipment, superhard materials, cemented carbides, aerospace components, , hardware and sanitary ware, medical devices, eyewear and jewelry industries,
such as ceramic vacuum circuit breaker brazing, refrigeration copper tubes, motor carbon brushes, PCD 、 PDC 、 PCBN , stainless steel connection wires for medical endoscopes, eyeglass frames, titanium alloy golf club heads, copper alloys, silver alloy jewelry, etc.
TIJO The silver-based filler metals provided mainly include brazing powders, pastes, tapes, wires, and rings, with special compositions and specifications customizable according to customer requirements.
2. Copper-Based Filler Metals :
Copper-based filler metals are copper matrix alloys with elements added to lower melting points and improve comprehensive properties, such as phosphorus, silver, zinc, tin, manganese, nickel, cobalt, titanium, silicon, boron, iron, etc., mainly including pure copper, copper-phosphorus, copper-tin, copper-zinc, copper-manganese series. ;
Copper-based filler metals are widely used for brazing copper and copper alloys, carbon steel and cast iron, stainless steel, high-temperature alloys, cemented carbides, etc., featuring good electrical and thermal conductivity, as well as good strength and corrosion resistance.
Application Fields :
They are widely applied in electrical, electromechanical, aerospace, automotive manufacturing, petroleum, chemical, metallurgy, diamond tools, superhard materials, heat exchangers, jewelry, and other fields. , Examples include diamond thin-wall drills, diamond grinding heads, motor rotors, power tool carbon brushes, copper-silver electrical contacts, heat exchanger copper tubes, cemented carbide drill bits, etc.
TIJO The copper-based filler metals provided mainly include brazing powders and pastes, with special compositions and specifications customizable according to customer requirements.
3. Nickel-Based Filler Metals ：
Nickel-based filler metals are nickel matrix alloys with elements added to lower melting points and improve thermal strength, such as chromium, boron, silicon, phosphorus, etc., mainly including nickel-chromium-silicon-boron, nickel-silicon-boron, nickel-chromium-silicon, nickel-phosphorus, nickel-chromium-phosphorus series. ;
Nickel-based brazing alloys are widely used in stainless steel, high-temperature alloys, iron-based alloys, iron - Nickel-based alloy diamond, cemented carbide, C/C composite materials brazing, with excellent high-temperature resistance, ! corrosion resistance, and excellent mechanical properties ; 沮
Application Fields :
Widely used in aerospace, automotive manufacturing, nuclear industry, electronics and electrical appliances, kitchen and bathroom products, filtration equipment, petrochemical, power equipment, superhard materials and other industries ;
Such as brazing of high-temperature alloys, electric heating tubes, cemented carbide drill bits, engine oil coolers, heat exchangers, stainless steel watch bands, diamond grinding heads, hole openers, etc.
TIJO The provided forms of nickel-based brazing alloys mainly include brazing powders, solder pastes, amorphous brazing strips, etc., and special compositions and specifications can be customized according to customer requirements.
3. Core Technology Barriers
❶ Particle Size Control Technology
• Real-time monitoring by laser particle size analyzer to ensure D50 Deviation ≤ 1.5 μ m
• Sphericity > 92% (Scanning electron microscope image)
❷ Purification Process System
• Oxygen content: ≤ 800ppm (Inert gas atomization)
• Impurity control: Fe ≤ 0.03% Cu ≤ 0.02%
❸ Custom Development Capability
• Support element formula adjustment (trace additions such as Cr/Mn/Si )
• Customizable production
4. Quality Assurance System
◈ ISO 9001:2015 Full process control
◈ Provide composition test reports
◈ Own factory testing laboratory
5. Limited Time Service Channel
[Engineer Online Consultation] Real-time answers to brazing process questions
[Free Sample Program] Free samples for new customers
[Urgent Order Channel] Expedited production guarantee
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Address: No.39, Liandong Yougu lnd. Park, Bachelor Street,Changsha City,Hunan Province, China.
