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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
I. Brazing Technology Decryption`nbsp_tag
Process Principle`nbsp_tag
Through metal powder (brazing filler metal) with a melting point lower than the base material at450℃~1200℃, melting and penetration is achieved. This advanced joining technology realizes atomic-level metallurgical bonding of dissimilar materials while maintaining the structural integrity of the workpiece.`nbsp_tag
1. Essence of Brazing Technology
Definition:
By heating to450-1200℃(below the melting point of the base material), the metal powder brazing filler metal is melted and, aided by capillary action, fills the gap between the joints, forming a precision joining technology with atomic-level metallurgical bonding.
Three Core Technical Elements:
1.Temperature Control: Precisely matching the brazing filler metal liquidus line (±10℃interval control)
2.Gap Design:0.05-0.2mmOptimal capillary gap (different material matching database)
3.Interface Reaction: Brazing filler metal/base material element mutual diffusion forms3-8μmtransition layer
2.Brazing Technology Classification
Process Type |
Temperature Range |
Typical Applications |
Tianjiu Matched Brazing Filler Metals |
Soft Brazing |
180-450℃ |
Electronic Circuits/Jewelry |
Sn-Pb/In-SnAlloy |
Hard Brazing |
450-900℃ |
Automobiles/Refrigeration Equipment |
Ag-Cu-Zn/Ni-CrSystem |
High-Temperature Brazing |
900-1200℃ |
Aero-engines |
Au-Ni/PdBased Alloys |
3.Key Process Parameters
Heating Rate:5-20℃/s(to prevent base material oxidation)
Holding Time:30s-15min(adjusted according to workpiece size)
Protective Gas:Ar(99.999%purity)/Vacuum Degree (≤5×10⁻³Pa)
Flux Selection:FB102(aluminum-based)/FB301(stainless steel), etc., supporting systems
4. Six Major Advantages of Brazing
1.Dissimilar Material Joining: Steel-Ceramics/Copper-Aluminum, etc.300+Combination Schemes
2.Precision Forming: Can achieve0.1mmlevel micro-channel welding
3.Low Thermal Stress: Workpiece deformation <0.05mm/m
4.Mass Production: Automated production line speed up to1200pieces/hours
5.Composite Structure: Sealing completed in a single weld+Conductive+Load-bearing multifunctional
6.Environmental Upgrade: Replacing adhesive/electroplating and other polluting processes
II. Tianjiu Brazing Material Matrix`nbsp_tag
1.Silver-Based Brazing Filler Metal Series (Ag)
Application Scenarios: Refrigeration pipelines/Power equipment/Jewelry crafts`nbsp_tag
Star Products:`nbsp_tag
`nbsp_tag•Ag30CuZnSn(Melting point650℃) Vacuum brazing dedicated, airtightness improved40%`nbsp_tag
`nbsp_tag• Cadmium-free environmentally friendly formula, passedROHScertification`nbsp_tag
2.Copper-Based Brazing Filler Metal (Cu)
Application Scenarios: Automotive radiators/Motor windings/Tool manufacturing`nbsp_tag
Technological Breakthrough:
Independently Developed Gradient Granularity Technology (15-53μmadjustable)
Flow rate is improved by22%
3.Nickel-based high-temperature brazing filler metal (Ni)
Application scenarios: Aero-engine blades/Gas turbine components
Performance parameters:
Temperature resistance: Continuous operating temperature980℃
Oxidation resistance:1000hHigh-temperature oxidation test weight gain <0.3mg/cm²
4.Aluminum-based special brazing filler metal (Al)
Application scenarios: New energy vehicle battery trays/Heat exchangers
Process advantages:
√ Precise controlSicontent (9%-12%interval customization)
√ Argon gas protection brazing qualification rate99.6%
III. Core Technological Barriers
❶ Particle size control technology
• Laser particle size analyzer real-time monitoring to ensureD50deviation ≤1.5μm
• Spherical degree >92%（Scanning electron microscope illustration）
❷ Purification process system
• Oxygen content: ≤800ppm（Inert gas atomization）
• Impurity control:Fe≤0.03% Cu≤0.02%
❸ Customized development capabilities
• Support element formula adjustment (Cr/Mn/Sietc. trace addition)
• Customizable production
IV. Quality Assurance System
◈ISO 9001:2015Full process control
◈ Each batch providesICPComponent test report
◈ Proprietary factory testing room
V. Time-limited Service Channel
[Engineer Online Consultation] Real-time answers to brazing process questions
[Free Sample Plan] Free samples for new customers
[Emergency Order Channel] Emergency production guarantee
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Address: No.39, Liandong Yougu lnd. Park, Bachelor Street,Changsha City,Hunan Province, China.
