Application of Dewaxing and Sintering Furnaces with Controlled Multi-Gas Supply
- The sinter furnace is a graphite heating furnace that performs high‐temperature heat treatment under a vacuum or controlled atmosphere. It is primarily employed for dewaxing and sintering cemented carbide products.
Features of the Dewaxing and Sintering Furnace with Controlled Multi-Gas Supply
- The graphite lining is utilised to achieve differential pressure dewaxing and to maintain furnace cleanliness;
- A wax guiding device prevents contamination of the vacuum pumps;
- Three independently operating heaters ensure uniform temperature distribution in the high-pressure heating zone. They are fitted with a system for detecting insulation resistance in the heater circuit, thereby identifying faults promptly;
- Dewaxing and sintering are performed in a single batch. This procedure avoids oxygen enrichment and damage during the transfer to the sintering furnace as observed in conventional processes; consequently, the production cycle is shortened, energy consumption is reduced and material use is lowered.
Functions of the Dewaxing and Sintering Furnace with Controlled Multi-Gas Supply
- Automatic sealing test;
- Four dewaxing functions: vacuum dewaxing, under-pressure (Ar) differential pressure dewaxing, micro-overpressure pulse (H2) dewaxing, and constant pressure (H2) dewaxing;
- Three sintering functions: Ar-atmosphere sintering, flowing gas multi-atmosphere sintering (atmospheric treatment), and vacuum sintering;
- Rapid cooling function;
- Fully automatic control with a computer–operator interface.
Specifications for the Dewaxing and Sintering Furnace with Controlled Multi-Gas Atmosphere
Model
|
Dimensions (mm)
|
Volume (L)
|
Max. Temp.
|
Final Vacuum (Pa)
|
Capacity (kg)
|
SF200
|
200×160×300
|
10
|
1550℃ (2200℃)
|
3 Pa (7×10⁻³ Pa)
|
20
|
SF250
|
250×230×500
|
28
|
1550℃ (2200℃)
|
3 Pa (7×10⁻³ Pa)
|
50
|
SF300
|
300×280×600
|
50
|
1550℃ (2200℃)
|
3 Pa (7×10⁻³ Pa)
|
100
|
SF350
|
350×320×700
|
78
|
1550℃ (2200℃)
|
3 Pa (7×10⁻³ Pa)
|
150
|
SF400
|
400×380×800
|
122
|
1550℃ (2200℃)
|
3 Pa (7×10⁻³ Pa)
|
200
|
SF450
|
450×420×900
|
170
|
1550℃ (2200℃)
|
3 Pa (7×10⁻³ Pa)
|
300
|
SF500
|
500×480×1200
|
288
|
1550℃
|
3 Pa
|
500
|
SF500L
|
500×480×1800
|
432
|
1550℃
|
3 Pa
|
800
|
SF550
|
550×520×1200
|
343
|
1550℃
|
3 Pa
|
600
|
SF600
|
600×450×900
|
243
|
1550℃
|
3 Pa
|
450
|
SF600L
|
600×500×1800
|
540
|
1550℃
|
3 Pa
|
1000
|