The vacuum system vacuum heat treatment furnace

The vacuum system vacuum heat treatment furnace

Vacuum heat treatment furnace of the vacuum system in general by the vacuum pump, vacuum valve, vacuum measuring instrument, cold trap, pipes and other parts, the following several kinds of common vacuum system, low vacuum system, applicable to the vacuum degree in 2 ~ 1333 pa range of vacuum heat treatment furnace, such as drainage well type vacuum furnace using this system.
Have mechanical booster pump vacuum system, suitable for vacuum degree in 1.33 ~ 10 -- creates pa range of vacuum heat treatment furnace, vacuum quenching furnace is widely adopted by this system. High vacuum system with pump and vacuum system, applicable to the vacuum degree in 1.33 x10 -- squared x10 ~ 6.6 -- 4 pa range of vacuum heat treatment furnace, vacuum annealing furnace, vacuum brazing furnace using this system.

The advantages and disadvantages of outside type vacuum heat treatment furnace is analyzed

The advantages and disadvantages of outside type vacuum heat treatment furnace is analyzed

The advantages and disadvantages of vacuum heat treatment furnace is mainly embodied in what respect, zhengzhou branch electric furnace co., LTD., for you to share: outside the advantages of vacuum heat treatment furnace mainly displays in: 1. Simple structure, easy to construct, or use the ordinary heat treatment resistance furnace modification of the original; 2. The vacuum chamber volume smaller, less displacement, furnace tank in addition to the work piece, there are few other need to gas components, and thus put less gas (no insulation panel structure, etc.), easy to achieve high vacuum; 3. Because the electric heating element is in an external heated, there is no vacuum discharge problem; 4. The stove no more mechanical action program, simple operation, low failure, convenient maintenance; 5. Do not contact with lining, high temperature vacuum furnace workpiece in high temperature without the possibility of chemistry; 6. Compared with internal heating type vacuum furnace, because of its simple structure, under the same load, its cost is only part of the internal heating type vacuum furnace 1/2 - a third; From maintenance, service life and reliability evaluation, more practical. But at the same time there are still some defects external heated vacuum heat treatment furnace, mainly displays in: 1. Low heat transfer efficiency of the furnace, heating workpiece slower; 2. The furnace tank material, furnace temperature is generally maintained at below within the range of 1000-1000 ℃; 3. Part of the furnace tank exposed to atmosphere, although you can set the heat shield, but heat loss is still very big; 4. The furnace heat capacity and thermal inertia is very big, control more difficult; 5. The service life of furnace tank is shorter.

In the process of vacuum quenching furnace operation must pay special attention to what

In the process of vacuum quenching furnace operation must pay special attention to what

Vacuum quenching furnace by furnace, oven, heating element, ventilation and control system, etc. In the process of vacuum quenching furnace operation must pay special attention to:
(1) must be completely before starting the row into methanol cracking furnace pipe in the air;
(2) the methanol is harmful to human body, environment, storage and transportation pipeline is necessary to prevent leakage;
(3) the furnace gas emission of CO and H2 flammable, explosive, toxic, should be in full burning oven;
(4) check the circulating cooling water, mixing fan, atmosphere pressure, furnace bottom sealing, thermocouple is normal or not. After continued use, may attack in methanol cracking furnace carbon black, scattered within the chamber of a stove or furnace reactor, every batch shall be in addition to carbon.
Works to do more than vacuum quenching furnace.

The vacuum system vacuum heat treatment furnace

The vacuum system vacuum heat treatment furnace

Vacuum heat treatment furnace of the vacuum system in general by the vacuum pump, vacuum valve, vacuum measuring instrument, cold trap, pipes and other parts, the following several kinds of common vacuum system, low vacuum system, applicable to the vacuum degree in 2 ~ 1333 pa range of vacuum heat treatment furnace, such as drainage well type vacuum furnace using this system. The vacuum system with mechanical booster pump, suitable f or vacuum degree in 1.33 ~ 10 -- creates pa range of vacuum heat treatment furnace, vacuum quenching furnace is widely adopted by this system. High vacuum system with pump and vacuum system, applicable to the vacuum degree in 1.33 x10 -- squared x10 ~ 6.6 -- 4 pa range of vacuum heat treatment furnace, vacuum annealing furnace, vacuum brazing furnace using this system.

How to pay special attention to the heat treatment and stronger manufacturing

How to pay special attention to the heat treatment and stronger manufacturing

Heat treatment is the key of the resolution commodity function, stature and reliability, the level of heat treatment is the center of manufacturing competition force elements, heat treatment in China is not due notice, however, and the quality of heat treatment industry itself know indifference, that there is a big distance with the international leading level.
Backward heat treatment has become the bottleneck of Chinese manufacturing by the big teams. The author thinks that, for change This kind of situation, the primary demand changing ideas, understanding the effects of heat treatment on the manufacturing and important, clearly know the situation of heat treatment of backward and damage, explore the causes, and talents together Catch up with the world leading level.
The advantages of using heat treatment skills, abundant information potential, leading the development of new products is important way of autonomy for decorating. Such as ultra high strength steel in the process of form machine gear and its application of high-power hydraulic coupler effect; After heat treatment of progressive die stature to promote the development of high-speed cold heading machine; Nano Zr2O honeycomb composite coating decreased by heat resistant alloy blade temperature becomes a new generation of aircraft engine key skills. From the current urgent need in the research of strategic equipped with also reflects the important effect of heat treatment skills.

The influence factors of heat treatment

The influence factors of heat treatment

Today we'll talk for everyone in the use of vacuum heat treatment furnace heat treatment when the influence factors of heat treatment:
1. Heat treatment the material of products must comply with the relevant national standards;
2. The use of vacuum heat treatment furnace can meet the technical requirements of workpiece;
4. Must develop a set of perfect processing plan of right;
5. Inspection equipment and personnel to the corresponding level;
6. Have a relatively liberal leader
As long as you later when using vacuum heat treatment furnace for heat treatment can do more than six, believe that the heat treatment product performance will be very good.

Mold vacuum heat treatment

Mold vacuum heat treatment

Vacuum heat treatment technology is developed in recent years, a new type of heat treatment technology, it has the characteristics of it is desperately needed in the mould manufacturing, such as preventing heating oxidation and decarburization, vacuum degassing and degassing, eliminate hydrogen embrittlement, so as to improve the plasticity and toughness of materials (parts) and fatigue strength. Vacuum heating slowly, parts smaller temperature difference between inside and outside factors, determines the parts and small deformation caused by vacuum heat treatment process.
Heat treatment process of the successful development and application of computer simulation technology, that makes it possible to mold the intelligent heat treatment. Due to the mold production of small batch (even piece), the characteristics of many varieties, as well as to the performance requirements of high heat treatment and are not allowed to appear the characteristics of the waste, and makes mould intelligent heat treatment must be. In foreign developed countries, such as the United States, Japan, etc., in terms of vacuum high-pressure gas quenching, development is fast, the main target is mold.
Mold is mainly used in the vacuum heat treatment is vacuum oil cold hardening, vacuum air cooled vacuum quenching and tempering. To maintain the artifacts, such as mold excellent characteristics of vacuum heating and cooling agent and the choice of cooling process and is very important, die quenching process mainly adopts oil cooled and air cooled. Machining of mould for after heat treatment is no longer working face, as far as possible by vacuum tempering after quenching, vacuum quenching workpiece (mould), in particular, it can improve the surface quality of the related mechanical properties, such as fatigue, surface brightness, corrosion resistance, etc.

Aluminum alloy heat treatment technology

Aluminum alloy heat treatment technology

1, the principle of the aluminum alloy heat treatment
Aluminum alloy casting heat treatment is to choose a certain heat treatment specification, control the heating rate rises to a corresponding temperature cooling, heat preservation time to must speed to change its alloy, its main purpose is to improve the alloy's mechanical properties, enhance the corrosion resistance, can improve the processing, get the size stability.
2, the characteristics of the aluminum alloy heat treatment
As is known to all, for carbon steel, immediate access to the high hardness after quenching, and the plastic is very low. But for aluminum alloy and otherwise, the aluminum alloy after quenching, higher strength and hardness is not immediately, as for the plastic instead of down, instead of rose. But this kind of alloy after quenching, placed a period of time (e.g., after 4 ~ 6 days and nights), strength and hardness will be significantly increased, and the plastic is significantly reduced. The strength and hardness of aluminum alloy after quenching grow along with the time and improve the phenomenon, referred to as aging. Aging can occur at room temperature, according to the natural aging, can also be higher than the room temperature at some stage in the temperature range (100 ~ 200 ℃), called artificial aging.

Hydrogen Supply Methods For Heat Treating Operations

Hydrogen Supply Methods For Heat Treating Operations

 Many manufacturing processes today rely on hydrogen as an important protective and reducing atmosphere, especially in the production of stainless steel alloys. The method of gas delivery should be carefully evaluated to optimize production efficiency and to minimize manufacturing costs. 
Hydrogen has been used in both pure form and in gas mixtures for many years in thermal and metallurgical processes such as sintering, brazing, annealing, powder coating, metal injection molding and welding operations.
Improvements in hydrogen production technology are offering new, cost-effective and environmentally sound options for metal producers. In weighing these options, metallurgists and heat treaters must consider the location of their facilities, hydrogen-use patterns, current average hydrogen consumption and estimated future needs; as well as storage, siting, regulatory and maintenance issues. It is also necessary to take into account the level of hydrogen purity required for a specific process.
Hydrogen generators provide a particularly attractive solution for captive or commercial heat treating operations that process stainless steel components, operate 24/7 and have furnaces requiring high- purity gas. In fact, on-site generators are ideal for locations where hydrogen delivery and storage is difficult or prohibited.