The overall structure of vacuum furnace

The overall structure of vacuum furnace

Vacuum tempering furnace furnace The body consists of two parts; The upper part of the vacuum chamber (negative pressure steam room), hold the space tubular steam-water heat exchangers, used to heat flow through the circulating water heat exchanger. Operating principle: the vacuum hot water boiler is running, under vacuum negative pressure furnace absorbed heat medium water inside the fuel combustion heat release, boiling vaporization for low temperature steam, low temperature steam rising in stainless steel heat exchanger in circulating water system, circulating water heating for the user or sanitary hot water for heating. Itself is cooled water vapor condenses into water droplets fall to the heat medium water again after heated, so as to complete the whole cycle.
So it is the working principle of the interior of the vacuum furnace. HTM constantly in an enclosed body = = = = evaporation condensation = = "boiling heat medium water" in the loop, so don't need to supplement the condensed water, also do not have empty the risk of burning. Vacuum hot water boiler using soda condensation heat transfer, in all working condition of heat transfer, soda, condensation heat transfer coefficient of heat transfer is the highest.

Vacuum furnace exquisite workmanship

Vacuum furnace exquisite workmanship

Vacuum furnace play an irreplaceable role in mold production, mainly used in ceramic sintering, vacuum smelting and electric vacuum parts in addition to gas, annealing, brazing of the metal, and ceramic to metal seal, etc.
Vacuum furnace vacuum heat treatment can achieve almost the entire heat treatment process, such as quenching, annealing, tempering, carburizing, nitriding, during the quenching process can realize gas quenching, quenching oil, water nitrate quenching, quenching, etc., can also be vacuum brazing, sintering and surface treatment, etc. Vacuum furnace thermal efficiency is high, which can realize the rapid heating and cooling, which can realize no oxidation and decarburization, carburizing, can remove phosphorus crumbs on the surface of the workpiece, and has the effect such as degreasing degassing, so as to achieve the surface brightness purification effect. Generally speaking, the processed workpiece in the heating furnace is slow, and internal temperature difference is small, the thermal stress is small, so little deformation. Product qualified rate is high. Can reduce costs, have degassing effect, so as to improve the mechanical properties of the work and life. Good working environment, safety operation, no pollution and no pollution. Be processed workpiece no hydrogen embrittlement risk, to prevent surface of the titanium and refractory metal shell hydrogen embrittlement, stability and repeatability of vacuum heat treatment process. A series of advantages, the development of vacuum heat treatment equipment and technology is more and more attention and applied more and more widely.
Two professional vacuum heat treatment of vacuum technology and heat treatment technology that combines an integrated, refers to the whole and part of heat treatment process in a vacuum. Our country could be divided into low, medium and high vacuum and high vacuum.

Briefly describes the application of vacuum system industry

Briefly describes the application of vacuum system industry

Vacuum system application industries: electrical engineering, textile, CNC engraving machine, vacuum forming machine, folding machine, exposure machine, computer, semiconductor, circuit boards, batteries, capacitors, binding machine, photographic plate maker, freezing air conditioning process vacuum, packing machine, transformer, optical lens, automatic injection type, polyurethane technology, label pasting machine, printing machine, plate line, the vacuum lifter, vacuum suction cups, printing presses, VCD&DVD disc surface vacuum coating, industrial furnace, smelting and vacuum heat treatment, metal coating, vacuum welding, electron beam welding, vacuum coating, vacuum drying, such as welding, vacuum packaging industry, space simulation, scientific research, hospitals, negative pressure system, environmental protection industry, electronic industry, laboratories, plastic industry, general machinery, glass, marble, metal large heavy vacuum handling industries.

The safety of the vacuum furnace characteristics

The safety of the vacuum furnace characteristics

Vacuum furnace that vacuum heat treatment technology and comprehensive technology, the combination of the two professional heat treatment is to point to the whole and part of heat treatment process in a vacuum. Our country could be divided into low, medium and high vacuum and high vacuum. At present most of the vacuum heat treatment furnace work vacuum degree in 1.33 ~ 1.33 x 10 ˉ after Pa.
Vacuum heat treatment can achieve almost all heat treatment process, such as quenching, annealing, tempering, carburizing, nitriding, during the quenching process can realize gas quenching, quenching oil, water nitrate quenching, quenching, etc., can also be vacuum brazing, sintering and surface treatment, etc. Vacuum heat treatment furnace thermal efficiency is high, which can realize the rapid heating and cooling, which can realize no oxidation and decarburization, carburizing, can remove phosphorus crumbs on the surface of the workpiece, and has the effect such as degreasing degassing, so as to achieve the surface brightness purification effect. Generally speaking, the processed workpiece in the heating furnace is slow, and internal temperature difference is small, the thermal stress is small, so little deformation. Product qualified rate is high. Can reduce costs, have degassing effect, so as to improve the mechanical properties of the work and life. Good working environment, safety operation, no pollution and no pollution. Be processed workpiece no hydrogen embrittlement risk, to prevent surface of the titanium and refractory metal shell hydrogen embrittlement, stability and repeatability of vacuum heat treatment process. A series of advantages, the development of vacuum heat treatment equipment and process was more and more attention and applied more and more.

Vacuum furnace selection

Vacuum furnace selection

A, vacuum heat treatment furnace according to use can be divided into vacuum quenching furnace, vacuum tempering furnace, vacuum annealing furnace, etc.
1, vacuum quenching furnace; Vacuum quenching furnace can be divided into the vacuum oil quenching furnace and vacuum gas quenching furnace.
1, 1, vacuum oil quenching furnace is suitable for steel, spring steel, stainless steel, bearing steel, high temperature alloy steel such as vacuum heat treatment. Its main characteristic is wide applicable materials, hardenability is strong, the cost is low, the quenching oil can be reused. Deficiencies; The deformation relative to a few bigger, workpiece needed after cleaning. Vacuum oil quenching furnace and three from the structure can be divided into double chamber furnace chamber furnace, etc.
1, 2, vacuum high-pressure gas quenching furnace is suitable for high speed steel, stainless steel, die steel and some other better material of vacuum heat treatment of hardenability, characterized by small parts deformation, do not need to wash after heat-treatment. Deficiencies have quenching gases cannot be recycled, the cost is higher. Vacuum high-pressure gas quenching furnace from the structure can be divided into horizontal and vertical two kinds. Horizontal can be divided into single room, double room and 3 rooms, etc. The application of the vertical ring shape, tubular and long rod parts heat treatment. Vacuum high-pressure gas quenching furnace quenching pressure is commonly 2 b a r ~ 10 b r a. According to the needs of the user can select parts is suitable for the pressure of furnace type.
2, vacuum tempering furnace, vacuum tempering furnace can be divided into the single room, double room, and vertical generally USES nickel chrome with highest heating temperature is 800 ℃. Vacuum tempering furnace generally applicable requirements after tempering parts surface light, no oxidation color.
3, vacuum annealing furnace, vacuum annealing furnace can be divided into single rooms, double rooms and vertical. Vacuum annealing furnace according to the parts material can choose the high, moderate and low temperature (high temperature 800 ℃ ~ 1350 ℃, low temperature 800 ℃).

Vacuum brazing for tungsten carbide and cobalt titanium 40Cr steel

Vacuum brazing for tungsten carbide and cobalt titanium 40Cr steel

Cobalt tungsten titanium carbide and carbon steel 40Cr vacuum brazing welded. Vacuum brazing method is suitable for mass production of carbide cutting tools and drilling of carbide drills and the like. 
Once heated to complete multiple blade brazing of carbide cutting tools, we have a higher efficiency of brazing. Most carbide tools welding methods previously embedded in the carbon steel or low alloy steel substrate use is closely related to the use of performance cemented carbide welding process, the welding performance has a direct impact on the use of carbide effect. When vacuum brazing tungsten carbide cobalt titanium, welding residual stress must be minimized. Measures must be taken to reduce the braze welding stress can be taken to reduce brazing temperature, preheat and slow cooling, use plastic good solder, plus compensation pads, and other measures to improve the joint structure. When a large area of hard alloy brazing, regardless of intensity, should take special measures to reduce welding stress and prevent cracks.

Heat Treatment of Temper-able Aluminum alloys

  Heat Treatment of Temper-able Aluminum alloys

Aluminum with its alloys is becoming more and more important in the development of lightweight materials for use in the automotive industry. To meet the strength standards required for this purpose, heat treatment of the materials is often necessary.
Sophisticated process engineering provides for increased strength
For the heat treatment of temperable aluminum alloys Shanghai Gehang provides solutions for the process steps annealing, quenching and aging adapted to the specific requirements.heat traetment vacuum furnace.
Annealing is performed at approx. 535 °C for a period of several hours. Mixed aluminum crystals are formed, in which the alloying constituents such as silicon and magnesium are completely dissolved.
Quenching serves for "freezing" this condition. This prevents the precipitation of the alloying constituents dissolved in the mixed crystal.
The subsequent aging is performed at 140 °C to 200 °C for several hours. In this process, the required strength is achieved due to segregation processes in the crystal.
Rendering processes stable and reproducible
The conceptual and construction design of Shanghai Gehang heat treatment plants is performed with the clear objective of accomplishing stable and reproducible processes. The design of the circulating air flow, the definition of the heating zone length (gas-heated or electrically heated), the conveyor concept as well as the design of the quench will be optimized and adapted to the requirements of the actual products before accomplishing this objective. This ensures an equal starting basis for all the products being manufactured with the objective of leaving the production plant as a "first class" end product.
SIMUWU engineer has both in-depth process knowledge and extensive project experience. As a leading manufacturer of heat-treatment plants, with over 60 customer references, Shanghai Gehang is the partner of choice for manufacturers of aluminum structural components for cars and cylinder heads, engine blocks, transmission parts, other aluminum parts, and wheels.