High Temperature Brazing Furnace

Features
Max. working temperature	≤1350°C
Furnace Temperature Uniformity	≤±5℃
Ultimate Vacuum Level	8X10⁻⁴ Pa
Leak-up Rate	≤0.5 Pa/h
Multi‑zone synchronous temperature control for uniform and stable thermal field
Metal heat‑shield design for excellent thermal insulation and energy‑saving performance
Dedicated condensation‑filtration system to prevent brazing‑flux contamination
Horizontal / Vertical configurations available to suit diverse workpieces
Fully‑automatic control, compatible with continuous‑flow production

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Product Overview

The HZH Series Vacuum High‑Temperature Brazing Furnace is custom‑developed by Huaxiang Vacuum for materials including stainless steel, titanium alloys, high‑temperature alloys, cemented carbides and non‑ferrous metals. Designed for non‑oxidation high‑temperature metal brazing, it is widely used in mass production of core components such as precision heat‑exchange parts, sealed cavities, cemented‑carbide cutting tools and high‑temperature structural parts across aerospace, nuclear‑energy industry, automotive manufacturing, tool‑and‑die, electronics & power sectors.

Adopting single‑chamber internal‑heating cold‑wall construction, multi‑zone synchronous temperature control, optimized heating layout and dedicated anti‑contamination design, the equipment delivers superior temperature‑field uniformity and high vacuum tightness. It produces full‑formed, leak‑free and high‑strength brazed joints, and accommodates full‑range brazing requirements, from miniature precision components to large‑scale high‑temperature alloy assemblies.

Standard‑equipped with PLC‑HMI intelligent control system, it supports fully‑automatic operation, data logging, fault alarming and safety interlock. It can be integrated into automated production lines to greatly boost production efficiency and product consistency.

Technical Advantages

1. Multi-material High-Temperature Brazing Process

Developed specifically for vacuum brazing of high-temperature materials including stainless steel, titanium alloys, superalloys and cemented carbides. It matches phase-transformation characteristics of various alloys and melting properties of brazing fillers, delivering precise temperature control and stable heating profile. Features zero-oxidation, discoloration-free and intergranular-corrosion-free performance. Brazed joints are dense, high-strength and reliably sealed, ensuring long-term service stability of core components.
2.High-precision Uniform Thermal Field

Adopts multi-zone independent temperature control plus optimized heating construction. Furnace temperature uniformity reaches ≤ ±5°C. It greatly minimizes temperature deviation for large-size workpieces, multi-layer heat-exchange assemblies and long-cavity structural parts, guaranteeing consistent batch output, low deformation rate and stable yield.
3. High-vacuum & High-sealing System

Equipped with high-vacuum closed chamber and low-leakage sealing structure. Ultimate vacuum level can reach 8×10⁻⁴ Pa. It provides a clean, oxide-free brazing environment to satisfy stringent requirements for high-reliability, zero-leakage components used in aerospace, nuclear-energy industry, electronics and power sectors.
4. Anti-contamination Long-life Stable Design

Fitted with dedicated condensation-filtration system, which effectively captures brazing-flux vapor and volatiles generated during brazing. It eliminates risks of chamber contamination and pipeline blockage. The equipment features robust stability for continuous production, extended maintenance intervals and prolonged service life.
5. High Compatibility for Automated Production

Standard-fitted with PLC-HMI intelligent control system. It supports fully-automatic process execution, data logging, fault diagnosis and safety interlock. Capable of interfacing with automatic feeding, multi-station coordination and production-line integration to realize efficient continuous manufacturing, cut labor cost and boost production capacity.

Application Scope

1. Aerospace

Aero‑engine blades, turbine disks, combustion chambers, honeycomb sandwich structures, titanium‑alloy / superalloy heat‑exchange components, precision conduits, etc.

2. Nuclear‑energy Industry

Nuclear reactor fuel elements, control rods, steam‑generator heat exchangers, stainless‑steel / zirconium‑alloy pipelines, etc.

3. Automotive Industry

Turbocharger intermediate housings, stainless‑steel EGR coolers, oil coolers, superalloy heat‑exchange parts, etc.

4. Tool & Die

Brazing for cemented‑carbide cutting tools, diamond saw blades, exploration drill bits and cemented‑carbide die assemblies.

5. Power Electronics

Heat‑dissipation substrates for high‑power devices, hermetic joining of vacuum electronic components, microwave devices, IGBT water‑cooled heat sinks, etc.

6. Other Fields

Titanium‑alloy medical implants, precision sensors, optical instruments, superalloy sealed cavities, etc.

Product Specifications

Model	Effective Heating Zone (L × W × H, mm)	Load Capacity (kg)	Max. Temperature (°C)	Furnace Temperature Uniformity (°C)	Ultimate Vacuum (Pa)	Pressure Rise Rate (Pa/h)	Heating Power (kW)
HZH65	600×400×400	200	1350	≤ ±5	8×10⁻⁴	≤ 0.5	65
HZH120	750×500×500	300	1350	≤ ±5	8×10⁻⁴	≤ 0.5	120
HZH150	900×600×600	500	1350	≤ ±5	8×10⁻⁴	≤ 0.5	150
HZH220	1200×800×800	1000	1350	≤ ±5	8×10⁻⁴	≤ 0.5	220

Custom Non-Standard Solutions

Structural Customization

Custom‑built standard horizontal furnaces / vertical furnaces / extra‑large‑size furnace models
Parameter Customization

Heating zone dimension, load capacity, vacuum level, number of temperature‑control zones and heating power can be adjusted on demand
Process Customization

Optimized dedicated brazing profiles for stainless steel / titanium alloys / superalloys / cemented carbides
Auxiliary Customization

Automatic feeding system, production‑line integration, overhaul & upgrade of existing furnaces, 2 bar pressurized gas‑quenching configuration; molybdenum / graphite heating elements are optional

Our Services

Standardized response mechanism

• 4-hour rapid response to demands.

• Engineers will arrive within 24 hours within a 400km radius.

• Free troubleshooting/repair/replace parts within 48 hours.

• No cost: All expenses covered for non-human faults during the warranty period.
Full-Cycle Intelligent Maintenance

• 7×24-hour remote monitoring within the warranty/membership period

• Regular on-site inspection, maintenance and upkeep by professional engineers

• Core objective: Extend the service life of equipment
Customized Preventive Maintenance

• Adjusted according to usage intensity, operating frequency, local temperature and humidity, etc.

• Custom exclusive plans for advance risk troubleshooting

• Reduce unplanned downtime
Lifetime Membership Service

• Complete membership benefits available after the expiration of the warranty period

• Lifetime 4S-style equipment maintenance, servicing and technical upgrades

• Continuous optimization of equipment performance and value
Systematic Hands-on Training

• One-on-one on-site tutoring by senior engineers after equipment commissioning

• Instruction on operation, maintenance and basic troubleshooting

• Practical assessment until proficient mastery is achieved