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Vacuum Arc Remelting VAR furnace for steel/tungsten/molybdenum/niobium and titanium alloys
- 1 Set / Sets per Month
- Dalian China
- T/T
Product Details
Condition: | New | Type: | Other, Vacuum Arc Remelting VAR furnace for steel/tungsten/molybdenum/niobium | Usage: | Other, Vacuum Arc Remelting VAR furnace for steel/tungsten/molybdenum/niobium |
Place of Origin: | Liaoning, China | Brand Name: | SIMUWU | Model Number: | VAR |
Voltage: | 220V/380V | Power(W): | adjustable | Dimension(L*W*H): | Custom Made |
Weight: | 1T-50T | Certification: | ISO9001:2008 CE | Warranty: | 12 Months |
After-sales Service Provided: | Engineers available to service machinery overseas |
Product Description
Vacuum Arc Remelting (VAR) furnace
popular! vacuum furnace/Vacuum Arc Remelting (VAR)furnace
Vacuum Arc Remelting VAR furnace for steel/tungsten/molybdenum/niobium and titanium alloys
VAR is widely used to improve the cleanliness and refine the structure of standard air-melted or vacuum induction melted ingots, then called consumable electrodes. VAR steels and superalloys as well as titanium and zirconium and its alloys are used in a great number of high integrity applications where cleanliness, homogeneity, improved fatigue and fracture toughness of the final product are essential. Aerospace, power generation, defense, medical and nuclear industries rely on the properties and performance of these advanced remelted materials.
Process Technology and Process Characteristics
VAR is the continuous remelting of a consumable electrode by means of an arc under vacuum. DC power is applied to strike an arc between the electrode and the baseplate of a copper mold contained in a water jacket. The intense heat generated by the electric arc melts the tip of the electrode and a new ingot is progressively formed in the water-cooled mold. A high vacuum is being maintained throughout the remelting process.
The basic design of the VAR furnace has been improved continuously over the years particularly in computer control and regulation with the objective of achieving a fully- automatic remelting process. This in turn has resulted in improved reproducibility of the metallurgical properties of the products.
Metallurgy of the Vacuum Arc Remelting Process
The VAR ingot’s solidification structure of a given material is a function of the local solidification rate and the temperature gradient at the liquid/solid interface. To achieve a directed dendritic primary structure, a relatively high temperature gradient at the solidification front must be maintained during the entire remelting process. The growth direction of the cellular dendrites conforms to the direction of the temperature gradient, i.e., the direction of the heat flow at the moment of solidification at the solidification front. The direction of the heat flow is always perpendicular to the solidification front or, in case of a curved interface, perpendicular to the respective tangent. The growth direction of the dendrites is thus a function of the metal pool profile during solidification. As pool depth increases with the remelting rate, the growth angle of the dendrites, with respect to the ingot axis, also increases. In extreme cases, the growth of the directed dendrites can come to a stop. The ingot core then solidifies non-directionally, e.g., in equiaxed grains, leading to segregation and micro-shrinkage. Even in the case of directional solidification, micro-segregation increases with dendrite arm spacing.
Vacuum Arc Remelting (VAR) furnace
popular! vacuum furnace/Vacuum Arc Remelting (VAR)furnace
Vacuum Arc Remelting VAR furnace for steel/tungsten/molybdenum/niobium and titanium alloys
Model
|
Capacity (Kg) | Working voltage (V) | Maximum current (A) | Ultimate vacuum (Pa) | Pressure rising rate (Pa/h) | Cooling water consumption (M3//h) |
VCF-200 | 200 | 20-40 | 25000 | 6X10-2 | 2 | 4 |
VCF-500 | 500 | 20-40 | 80000 | 6X10-2 | 2 | 5 |
VCF-800 | 800 | 20-40 | 12000 | 6X10-2 | 2 | 6 |
VCF-1T | 1000 | 20-40 | 12000 | 6X10-2 | 2 | 10.5 |
VCF-1.5T | 1500 | 20-40 | 16000 | 6X10-2 | 2 | 16 |
VCF-2T | 2000 | 20-40 | 18000 | 6X10-2 | 2 | 20 |
VCF-3T | 3000 | 20-40 | 24000 | 6X10-2 | 2 | 30 |
OEM products are acceptable.
Application fields:
• Super alloys for aerospace;
• High strength steels for rocket booster rings and high pressure tubes;
• Ball-bearing steels;
• Tool steels (cold and hot work steels) for milling cutters, drill bits, etc.
• Die steels;
• Melting of reactive metals (titanium, zirconium and their alloys) for aerospace, chemical industry, off-shore technique and reactor technique
Q:Are you a factory?
A:Yes,We are China leading vacuum furnace manufacturer ,It was formerly known as China National Vacuum Research Institute. Our factory is located in Shenyang city with Shanghai international sales department ,covering an area of over 10,000sq.m.We have powerful R&D team and manufacturing facility.
Q:What kind of vacuum furnaces do you have?
A:We make all kinds of vacuum furnaces, widely used in materials, IT, metallurgy ,machinery and so on ,especially industrial vacuum furnaces: vacuum sintering furnace, vacuum brazing furnace, vacuum heat treatment furnace (hardening, quenching, annealing, tempering, nitriding, carburizing), vacuum induction melting furnace, laboratory vacuum furnace, induction furnace.
Q:Do you have customization or OEM service ?
A:We can provide the regular and standard model sizes, at the same time, we can customize furnaces as product ,work piece size, and temperature requirement .Meanwhile, we offer OEM service under the strict industrial standard.
Q:What kind of quality standard dose your furnace follow?
A:Firstly, we are ISO9001:2008 and CE certified factory, All the processes are strictly following the standard of the metallurgy process. In the factory, we have about 10 employees that work in the quality assurance department. We control the furnace quality in our factory as below:
1st step : Internal inspection (such as the supply chain management, in-process quality control and final quality assurance which are executed by our QC engineer according to the technical contract)
2nd step: Pre-acceptance standard (buyer send engineers to check or entrust the third party to do in our factory,)
3rd step: Site acceptance(After the installation of vacuum furnace in user’s factory, we sign the reception report )
Q: Is it hard to operate &maintain?
A:Our furnace has the PLC controller and intelligent programmable temp. Controller, user can use touch screen to set curves, auto/manual switch interlock, auto &monitor system, it is easy to operate. We prepare enough spare parts for user and on line technical support.
Q:Can you serve customer oversea like installation and debugging ?
A:Yes,we can dispatch our engineer to your city for installation and debugging or other service. Meanwhile,we will offer relevant documents: The plan of equipment, Foundation condition graph, The layout of equipment, Electric control system schematic diagram, Main accessories operating instructions & qualification and on.
Q:How about training ?
A:Buyer sent operator to our factory to get trained about the furnace operation; Our engineers offer training in the users working site.
Q:What about payment terms?
A:L/C, T/T, and so on.
Q:How long is your furnace warranty period ?
A:Since passing the site acceptance ,it has 12 months warranty period .
Q:How to get quick quotation from us?
A:Please offer us the treating material, the work piece size, max. Temperature, heating zone dimension, vacuum degree and other special requirement. Then we can quote you ASAP.
We aim to provide great customer service. For product inquiries, technical support, here are all the ways you can contact SIMUWU / Shanghai Gehang Vacuum Technology Co.,Ltd.
Contact Us
- Shanghai Gehang Vacuum Technology Co., Ltd.
- Contact nameEric Rui
- Phone86-021-50878190
- AddressRoom 502, Building 1, 1295 New Jinqiao Road
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