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Spark Plasma Sintering Furnace

Spark plasma sintering system With this new sintering technique the tool and the component are directly heated by DC current pulses to reduce cycle times to a few minutes. The use of DC current pulses causes an additional increase in sintering activity in various materials due to the processes...

Spark plasma sintering system

With this new sintering technique the tool and the component are directly heated by DC current pulses to reduce cycle times to a few minutes. The use of DC current pulses causes an additional increase in sintering activity in various materials due to the processes that occur at the points of contact of the powder particles (Joule heating, generation of plasma, electro migration etc.). Therefore, a significantly lower temperature as well as significantly lower mould pressure is needed than is used for conventional hot pressing and sintering. 

Additionally, the furnaces can be equipped with a radial, inductive heating system to prevent radial temperature gradients with large-sized components or to facilitate the inductive heating of materials that are otherwise inadequately conductive at room temperature. Technology like this offers entirely new possibilities to manufacture numerous materials with extraordinary characteristics, e.g.:

1. Sintered nanomaterial without significant grain growth

2. FGM («Functionally Graded Materials»)

3. Composite materials

4. Innovative carbide metals

5. Aluminum and copper alloys as well as intermetallic compounds

6. Structural and functional ceramics

 

Functions:

1.     Working temperature: up to 2400°C

2.     Vacuum: 5 x 10-2 mbar(a)

3.     Working gases: Ar / N2 (further types of gases available upon request)

4.     Servo-hydraulic force control

5.     Precise, rigid portal frame with low deformation, accurate guiding of the heading tool

6.     Measuring device for compression stroke and compression speed

7.     Double-walled, water-cooled stainless steel vacuum chamber with a leakage rate of less than 1 x 10-3 mbar(a) l/s

8.     Easy accessibility

9.     Temperature measurement and control with either axial/radial pyrometer or flexible thermocouples

10.  Freely programmable sintering parameters with up to 40 segments per recipe

11.  Pulse on/off is freely programmable (1...999 ms) for each individual segment

12.  Heating rate: up to 1000 K/min (depending on tool size)

13.  Comprehensive software for data recording and evaluation of all sintering parameters

14.  User friendly online process management system available

15.  Semi-continued furnaces for industrial applications available


Number

Model
 
 

Dimension
  components
  [mm]

Max.
  pressing
  force
  [kN]

Max.
  voltage
  [V]

Max.
  current
  [A]

Max.
  heating
  power
  [kW]

S1

VHP-6/18

Ø 30

50

10

3000

30

S2

VHP-10/20

Ø 50

100

10

5500

37

S3

VHP-20/30

Ø 80

250

10

8000

60

S4

VHP-25/30

Ø 100

400

10

10000

120

S5

VHP-30/30

Ø 120

600

10

15000

180

S6

VHP-35/30

Ø 150

1250

8

24000

360

S7

VHP-40/45

Ø 300

2500

8

48000

480

 



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