2017年3月29日星期三

Metal Heat Treatment Market Report Aims To Outline and Forecast

Metal Heat Treatment Market Report Aims To Outline and Forecast
Metal Heat Treatment Market Research Report covers the present scenario and the growth prospects of the Metal Heat Treatment Market for 2016-2020. To calculate the market size, the report considers the revenue generated from the sales of Metal Heat Treatment globally. Metal Heat Treatment Market, has been prepared based on an in-depth market analysis with inputs from industry experts.
Metal heat treatment is a method used to change the physical and chemical properties of metals. Most metal components require thermal processing to change their metallurgical and physical properties to attain the desired engineering requirements for their intended use. Metal heat treatment involves the use of a vacuum furnace in which metals are heated to a particular temperature to change their metallurgical properties.
Metal heating furnaces enable heating metals up to 1,100ºC-1,500ºC (centigrade) and subjecting them to different types of processes such as annealing, hardening and quenching, brazing, and carburizing. In metal heat treatment, the absence of air and other gasses in the furnace prevents heat transfer through convection, thereby eliminating the possibility of contamination. This process renders excellent surface finishing to heat-treated parts.

2017年3月27日星期一

The correct use of single crystal furnace maintenance on a regular basis

The correct use of single crystal furnace maintenance on a regular basis

In the operation of single crystal furnace because always is in a state of high temperature, high and strict with other parts, because of the need to maintain the work over a long period of time, so you need to pay special attention to make the necessary maintenance on a regular basis.
1, crucible drive requirement of motion accuracy is higher, is the core equipment of the moving parts, should focus on maintenance. Axis is graphite crucible crucible support shaft, should check the cooling water, so as to avoid loss.
Crucible driven by ball screw and linear guide rail structure, are key components in crucible driver, should be kept clean, dust and debris adhesion, is strictly prohibited and daub grease on a regular basis.
2, seed crystal rotation and hoisting mechanism of maintenance
Seed crystal rotating parts and hoisting mechanism is the key of the single crystal furnace, the unit operation quality directly affects the growth of single crystal. Therefore, must also focus on maintenance.
Roll wheel box is the core of the seed crystal ascension, roll wheel box parts in general may not arbitrarily dismantled and must be pulled down, must ensure that the flexible shaft on the reinstall. Flexible shaft steel wire rope in use are not allowed to have die bending phenomenon, and in every time when blow-in check whether the wire rope is burning, if there is any damage should be timely repair or replacement of new steel wire rope.
In addition to the above two points, before each furnace should check whether the water system is open, the water temperature detection sensor installation is normal. Found a scale should be clear in time. In the process of crystal pulling, if discover the water pressure alarm or leak to take timely measures. Every batch vacuum pipeline filter to clean up once, suction pipe once every 20 ~ 30 furnace clean.

2017年3月23日星期四

Low temperature box type heat treatment furnace is introduced for details

Low temperature box type heat treatment furnace is introduced for details

   Low temperature box type heat treatment furnace used for tempering and non-ferrous metal heat treatment. The heating mode can be divided into direct heating and separate heating. Direct heating thermal efficiency is high, but the workpiece tend to be direct thermal radiation caused by high temperature electric heating element local overheating, the solution is to put insulation plate between the workpiece and the electric heating element (such as charging box, etc.).
  Separation of heating is to use hot fan will be in the hot gas into the furnace. Separate low temperature electric box furnace used in the practical application is less, most used in the workshop or well type box-type furnace heat treatment at low temperature.

2017年3月21日星期二

Analysis of the single crystal furnace furnace cover for profile

Analysis of the single crystal furnace furnace cover for profile

Single crystal furnace furnace cover is commonly oval head. Due to its good mechanical properties and processing technology. It is widely used in industry. In the production of single crystal furnace, often encountered in the welding ellipsoidal head to take over the problem. This kind of production enterprises in China are generally use manual and welding. The backward mode of processing not only processing efficiency is low, and the machining quality is difficult to meet the design requirements, the production efficiency and welding quality is affected.
Main components of the ellipsoidal head is half elliptical shell. Shell is limited by two surface objects, uniform shell thickness of each point in the midpoint of the curved surface is called shell surface, the surface formed by surface of revolution is called the revolving shell, the shell surface in the busbar rotary formed a revolving shell. Therefore, represented by an elliptical head surface in busbar elliptical head geometry.
A principle
Single crystal furnace general elliptical head takes over the shape of cylinder cover, the case is the top surface is divided into many small line segments, each segment and the adjacent two plain wire and nozzle-vessel junction line to form a quadrilateral, obtained the side length of each side of the quadrilateral can expand the quadrilateral, such one by one on all quadrilateral is the ellipse over expansion plan.
Surface is considered to be a move line in space motion trajectory, the line is called bus, bus bar in the surface in a position, known as plain wire. Available to take over the plain wire cylinder and elliptical head surface intersection; Then calculate the corresponding node. Point to the distance on the surface of the ellipse to take over the top is the prayer plain wire length.
General furnace cover elliptical head over the single crystal furnace is a common problem in practical production. We use parallel expansion method taking over a mathematical model is established, with the aid of computer promptly and accurately draw a diagram, fast and exact underground material, thus to take over the precast, slope and the curve of the head group H in uniform after clearance, improved the welding speed, improves the production efficiency and product quality.

2017年3月3日星期五

What is a vacuum heat treatment furnace?

What is a vacuum heat treatment furnace?
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. At present most of the vacuum heat treatment furnace work vacuum degree in 1.33 ~ 1.33 x 10 ˉ & sup3; 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 technology is more and more attention and applied more and more widely.