Products
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High Temperature Vacuum Atmospheric Sintering Furnace
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Vacuum furnace for laboratory sintering
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Double Chamber Vacuum Furnace for Oil and Gas Quenching
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Vacuum Tempering Furnace for Heat Treatment
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Vacuum Gas Quenching Furnace for Heat Treatment
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Vacuum Annealing Furnace Heat Treatment
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Furnace for vacuum soldering of aluminum radiators
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Inclined Rotating Vacuum Tube Sintering Furnace
High Temperature Vacuum Soldering Furnace for Brazing Copper Alloys, Stainless Steel
This equipment is used for vacuum brazing of copper alloys, stainless steel, high temperature alloys, high temperature alloys, etc. It is also suitable for vacuum brazing of refractory alloys or dissimilar metals containing zirconium, niobium and molybdenum. It is widely used for soldering plate heat exchangers and oil coolers. During the welding process, the parts are in a vacuum or protective atmosphere, which has the advantages of no oxidation, small deformation, no porosity, no flux inclusions, bright surface, no process pollution and so on. Several soldered seams and several parts can be made at the same time. Welding.SIMUWU original vacuum furnace control system using PLC temperature control controlled by intelligent temperature controller. Precise control and high degree of automation. Automatic/manual switching without intervention and abnormal alarm function can be realized, simple and reliable operation. Fully automatic SCADA operating system, easy operation.
Description
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High Temperature Vacuum Soldering Furnace for Brazing Copper Alloys, Stainless Steel
Specification
| model | size (mm) | Load capacity (Kg) | Heating element | Maximum temperature (℃) | Temperature Uniformity (±℃) | Maximum vacuum (Pa) |
| VTHB-335 | 300×300×450 | 100 | Graphite/Mo-La alloy | 1300 | 5 | 4×10-1 |
| VTHB-446 | 400×400×600 | 150 | ||||
| VTHB-557 | 500×500×700 | 280 | ||||
| VTHB-669 | 600×600×900 | 450 | ||||
| VTHB-8812 | 800×800×1200 | 800 | ||||
| VTHB-9918 | 900×900×1800 | 1200 | ||||
| VTHB-1115 | 1000×1000×1500 | 1500 | ||||
| VTHB-1118 | 1000×1000×1800 | 1800 | ||||
| VTHB-8830 | 800×800×3000 | 3000 |
High Temperature Vacuum Soldering Oven
The advantages of a vacuum soldering oven are as follows.
1. complete elimination of oxidative decarburization of the workpiece surface during the heating process, which allows you to obtain a clean surface without a destructive layer. It is only the grinding of the tool flute side (such as the grinding of a twist drill, so that the decarburization layer of the flute surface is directly exposed to the edge) has a great influence on the cutting performance.
2. Does not pollute the environment, does not require recycling of three wastes.
3. The accuracy of furnace temperature measurement is greatly improved. The thermocouple reading value reaches 1.5℃, but the temperature difference between different parts of a large number of workpieces in the furnace is large. When using forced circulation of thin gas, the temperature difference can be controlled within ±5.
4. high degree of mechatronics. Based on improving the accuracy of temperature measurement, workpiece movement, air pressure adjustment, power adjustment, settings can be programmed step by step.
5. Energy consumption is significantly lower than that of a salt bath oven. Modern advanced vacuum soldering furnace with heating chamber, using high-quality insulation materials made of insulation walls and barriers, can be highly concentrated in the heating chamber, the energy-saving effect is remarkable.
Structure of high temperature vacuum soldering furnace.
1. Vacuum oven system
1.1 To ensure vacuum conditions, the vacuum system is equipped with a three-stage vacuum unit: KT-600 diffusion pump (with temperature control), ZJ-600 Roots pump and 2X-70 mechanical pump.
1.2 A vacuum detection point is installed on the front stage piping to determine whether the front stage vacuum pump is operating correctly.
1.3 This system uses a highly reliable vacuum pneumatic operating valve.
1.4 The diffusion pump has automatic temperature control function, and the inlet has a cold trap, which can effectively prevent pump oil from backflow and migration.
2. Furnace body
2.1 The furnace body is a water-cooled double structure, consisting of the furnace body, door and connecting parts. The internal and external walls are made of high quality carbon steel. Front door with hinged coupling.
2.2 The door is equipped with an inspection window with a static seal to monitor the status of the hot zone. The oven door is opened by pneumatic lock ring misalignment structure, easy to operate, safe and reliable.
2.3 There is a connector for connecting a vacuum system, a connector for multi-point temperature measurement, a connector for connecting a thermocouple, a connector for connecting water-cooled electrodes, a connector for filling and releasing air from the furnace body. All hot connections are water cooled or have a heat resistant fluoroelastomer ring seal.
All hot connections are sealed by water cooling or heat-resistant fluorine rubber ring sealing, which will not affect sealing under high oven temperature conditions.
2.4 shell and structural components after welding, must be in 4ka/cm2 water pressure under strict testing for 30 minutes to ensure welding quality, for a long time to ensure a stable working direct air environment, 2.5 furnace body with sewage device to Make sure the cooling water jacket is smooth for long-term use.
3. heating chamber
3.1 Stainless steel shell, insulation, insulation, workpiece support and heating elements.
3.2 The heater material is high-temperature molybdenum tape or graphite (use temperature 1700 degrees. Depending on the size of the working area of the heating chamber and the requirement for temperature uniformity, 3 heating zones are set.
3.3 There are 3 thermocouples in the heating zone.
3.4 Heat preservation layer adopts 2 layers of aluminum screen + 4 layers of stainless steel screen, the oven is clean, low gas generation, high vacuum, in order to ensure that the heating chamber for a long time use the heat preservation effect, the aluminum screen is made of anti- deformation processing.
3.5 Multi-point temperature interface is installed in the furnace body and heating chamber to check the uniformity of the temperature zone.
3.6 The workpiece holder is made of graphite with a load capacity of at least 500 kg.
3.7 Cooling method: air supply around the nozzle, air return from front and rear.
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