Vacuum heat treatment plant

The vacu­um heat tre­at­ment plant of the com­pa­ny ALD, which is available at the IOB, is sui­ta­ble for a who­le series of pro­ces­ses of the ther­mo pro­cess technology:

  • anne­al­ing
  • hardning/tempering
  • solu­ti­on heat treatment
  • sold­e­ring
  • aging
  • sin­te­ring

Hea­ting can be car­ri­ed out con­vec­tively, under N2/H2 par­ti­al pres­su­re and/or under fine or high vacu­um. The maxi­mum ope­ra­ting tem­pe­ra­tu­re of the fur­nace sys­tem is 1600°C. This makes the sys­tem sui­ta­ble for e.g. sin­te­ring high-tem­pe­ra­tu­re alloys.
Fol­lo­wing the hea­ting and hol­ding pro­cess step, this heat tre­at­ment plant also offers the pos­si­bi­li­ty of quen­ching the char­ge with nitro­gen under pres­su­re of up to 10 bar. The nitro­gen is cir­cu­la­ted in the fur­nace cham­ber by means of a high-speed fan and recoo­led via an inte­gra­ted, water-coo­led heat exchanger.

ald-ofen

Technical data

Batch dimension 350 x 350 x 550 mm³ (WxHxL)
Gross batch weightmax. 200 kg
Nomi­nal power fur­nace heating80 kW
Nomi­nal tem­pe­ra­tu­re convective150 — 700°C
Nomi­nal tem­pe­ra­tu­re Vacuum600 — 1600°C
Tem­pe­ra­tu­re uniformity+/- 5 K
Ulti­ma­te vacuum 
- in fine vacuum< 5 x 10-2 mbar
- in high vacuum< 5 x 10-5 mbar
Leak rate< 5 x 10-3 mbar l/s
Inert gas pres­su­re in con­vec­tion mode1,5 — 2,9 bar
Par­ti­al pres­su­re ope­ra­ti­on with N2 or H21 — 20 mbar
Maxi­mum pres­su­re for gas quen­ching with N210 bar