Vacuum brazing furnaceApplication Scope:

Vacuum brazing furnaces are suitable for metals, ceramics, stainless steel, high-temperature alloys, and refractory metals. They are used for annealing, brazing, and sintering under high vacuum and high-temperature conditions.

Deaeration and gas removal treatment. Applicable industries include: aviationAerospace, power electronics, powder metallurgy, automotive, semiconductor, tooling industry, mechanical engineering, etc.

Vacuum brazing furnaces are suitable for sintering high-purity ceramics into transparent ceramics, tungsten electrodes, and other materials under high vacuum for sintering and degassing processes. They are also applicable to the sintering of tungsten-molybdenum products.

Air烧结. Primarily used for high melting point metals and alloys.Melting and sintering of ceramics and other materials, also used for polishing, degassing some metals, or for supply.

Metal, ceramics, and others are measured under high-temperature vacuum conditionsFor physical and chemical properties. Widely used in inorganicMaterials (such as ceramic seals, zirconia, zirconium oxide)

Zinc, aluminum oxide, and other metals; as well as metal materials (such as hard alloys sintered in a vacuum or under protective atmosphere, which can also be used for materials requiring a clean sintering environment)

Subject to heat treatment. Suitable for use in pilot batch production by colleges and research institutions.

Vacuum brazing furnaceProduct Introduction：

Vacuum brazing furnaces are available in horizontal single-chamber and vertical bottom-discharge configurations. The furnace body and door feature double water-cooling, with a front and rear door design. The high-vacuum brazing furnace consists of a vacuum system,

Furnace Shell, Heating Chamber, Control System, Cooling System,Water-cooling system, inflation/deflation system, pneumatic system, temperature-measuring system, and feeding mechanism, etc., are composed.

1. Furnace Body:

Vacuum brazingThe furnace is composed of the furnace shell, furnace door, and furnace frame, etc., with the furnace shell and door featuring a double-skin jacketed cold wall structure. The furnace door is equipped with double-elliptical heads and a circular seal.

Welded in shape flange, equipped withO-ring seal, featuring an automatic lock and close cylinder structure.

The workpieces in the horizontal vacuum brazing furnace can be loaded and unloaded through the front and rear furnace doors. The main heating chamber, electrodes, and the exhaust port of the main vacuum pump are located in the middle.

The vertical vacuum brazing furnace door features a vertical lifting structure with a screw-driven lifting mechanism for automatic locking during opening and closing. Workpieces can be loaded and unloaded through the lower furnace door.

Centrally positioned, the heating chamber, electrodes, and main vacuum pump's exhaust port are set.

2 Heating chamber:

The vacuum brazing furnace heating chamber is composed of a stainless steel shell, insulation layer, insulating parts, workpiece support, and heating element.

The heater is made of high-temperature molybdenum sheets. Depending on the dimensions of the working area and the requirement for temperature uniformity of the heating chamber, the heater is configured with multiple heating zones or a single-chamber heating zone.

Heated by a regulator. The heating zone is temperature measured by a thermocouple. Used for random temperature checks inside the furnace.

Insulation layer by Molybdenum SheetsStainless steel screen composition, clean inside the furnace, excellent heat preservation effect.

3、Vacuum System:

3.1 The vacuum brazing furnace's vacuum system, in accordance with the vacuum requirements and process, is equipped with a diffusion pump vacuum unit: diffusion pump, throttle valve, Roots pump, molecular pump, and mechanical pump.

AndA combination of slide valve pumps and other configurations.Select based on the customer's vacuum requirement. Hunan Aipu provides professional selection.

3.2、Vacuum detection points are installed on the upstream pipeline., to determine if the preliminary vacuum pump is operating normally.

3.3 The vacuum system does not use butterfly valves; instead, high-reliability pneumatic dampers are employed.

3.4 The upper part of the diffusion pump is equipped with a low-temperature refrigeration cold trap to prevent the oil from returning into the diffusion pump.Increase the vacuum degree inside the vacuum chamber. Diffusion pump oil temperature is controlled by automatic temperature regulation technology.

Art, which can reduce the pump's backflow.。All internal surfaces of components in contact with high vacuum (pipelines, valves) are made of stainless steel and are processed strictly in accordance with high vacuum standards.

4. Electrical Control System

Vacuum brazing furnace's electrical control systemComposed of touch screens, programmable controllers, thyristor voltage regulators, vacuum gauges, and recorders, etc., to achieve power supply and control,

Record, monitor, and alarm protection features. Programmable Logic ControllerPLC utilizes Siemens CP series, temperature control uses Japan's conductive FP93Can precisely control temperature.

At the same time,PLC fully controls the operation of the equipment, providing sequential control signals according to process requirements, while simultaneously collecting feedback signals from the site, offering conversion, interlock,

Instructions and alarm signals. The entire process can be automated, except for loading and unloading, with a manual operating system available.

5. Water Cooling System

Vacuum brazing furnace body, furnace door, vacuum unit, water-cooled electrodes, and heat exchange system require cooling water. The system distributes the main water supply through piping to various cooling sections, utilizing a closed circuit.

Water recirculation system, equipped with a water pressure alarm system. The incoming water is branched to the municipal water pipeline for emergency use in case of power outages. Both the incoming and return water pipes are made of stainless steel.

Steel pipes, with an electrode water inlet equipped with a scope for easy observation of the water flow inside the pipe.

Vacuum brazing furnacePerformance Features：

2.High safety level, constructed with double-layer stainless steel shell, water-cooled through the sandwich, with the outer shell temperature lower than50℃. Equipped with pressure, water pressure, and high-temperature alarms, featuring safety

3. Design of the vacuum brazing furnace furnace chamberIncrease vacuum brazing furnaceFurnace wall's thermal insulation performance and temperature uniformity Reduce production labor intensity; refractory materials used in the furnace

4. Optimized circuit and air path design, effectively reducing the consumption of protective gases, promoting energy and emissions savings.

The intricate design keeps the external surface temperature of the equipment lower, offering a stylish and elegant appearance, with simple operation. (Water source and water recirculation unit are to be provided by the customer or optional.)

High quality. Sizes can be customized according to customer requirements.

Vacuum brazing furnaceOptional Features:

1.High Vacuum System:Vacuum systems include vacuum pumps, Roots pumps, diffusion pumps, molecular pumps, slide valve pumps, and butterfly valves; selection based on the user's vacuum degree requirements. Hunan

Apde provides professional selection services.

2.Gas Purification System

3.Closed-loop cooling water system

Vacuum brazing furnaceTechnical Specifications: