Piece do kąpieli ciepłej do soli neutralnych

Dzięki temperaturom roboczym od 180°C do 550°C te kąpiele cieplne są przystosowane do schładzania kąpieli cieplnych z najmniejszym możliwym wypaczeniem obrabianego przedmiotu, do ponownego odpuszczania, hartowania bainitycznego dla optymalnej wiązkości (zwanego również hartowaniem międzystopniownym), wyżarzania pośredniego po obróbce elektroerozyjnej i do niebieszczenia.

Sterowanie procesami

Funkcja i wyposażenie

QS20
QS70_.png
QS_Tauchheizkörper.jpg
QS70_Tiegelrandabsaugung.png

QS 20 - QS 400 martempering furnaces are filled with neutral salt and offer remarkably rapid and intensive heat transmission to the workpiece while ensuring optimum temperature uniformity. Since the batch is heat treated with the exclusion of oxygen, scale and discoloration on the surface of the parts are reduced to a minimum. For working temperatures at between 180 °C and 500 °C these martempering furnaces are useful for quenching or cooling with minimal workpiece distortion, retempering, austempering for optimal toughness, recrystallization annealing after electrical discharge machining (EDM) and for blueing. The quenching or cooling process is applied in order to achieve an even temperature uniformity throughout the workpiece‘s entire cross-section before the formation of martensite and to avoid distortion and formation of cracks in complex mechanical components during the subsequent hardening process. Tempering in a martempering bath is the same as the tempering process in forced convection furnace and is used to reduce a previously hardened workpiece to a desired hardness, to increase toughness and reduce stress within the workpiece. Austempering is a good choice to achieve a high level of toughness and dimensional accuracy in oil hardened low-alloy steels. Workpieces subject to austempering have high tensile strength and good elasticity.

  • Tmax 550  °C
  • Very good temperature uniformity
  • Martemper bath temperature control
  • Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
  • Heating with immersion heating elements
  • Rectangular crucible, integrated in the housing
  • Charging basket
  • Crucible made of 1.4828
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Dodatkowe wyposażenie

Additional equipment

  • Charging aid with hand crank and cable winch, mounted on side of furnace
  • Exhaust gas collection at crucible rim
  • Process control and documentation via VCD software package for monitoring, documentation and control

Specyfikacja techniczna

Process Examples with Petrofer and Durferrit Salts
QS-baths (steel/Nitinol)
Hardening, isothermic treatment of steels up to 950 °C, stress relieving, annealing, bluing, bainitization AS 135, AS 140, AS 220, AS 225, AS 200, AS 235, GS 230
Homogenization annealing, recrystallization annealing; warm-bath curing, tempering, banitizing, bluing AS 300

 

 

Model Tmax Work space dimensions in the charging basket
in mm
min. amount of salt max. charge weight Outer dimensions in mm Heating Electrical Weight
  °C w d h in l in kg W D H power in kW1 connection in kg
QS 20 550 300 210 460 20 3 800 600 1020 2,6 1-phase 150
QS 30 550 300 210 580 30 5 800 600 1020 3,2 1-phase 170
QS 70 550 400 300 680 70 10 1000 700 1020 8,0 3-phase 260
QS 200 550 540 520 880 200 30 1100 920 1240 18,5 3-phase 670
QS 400 550 730 720 980 400 50 1300 1120 1340 24,5 3-phase 1160
1Depending on furnace design connected load might be higher

Zapytanie ofertowe

Zapytanie ofertowe

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Centrum testowe dla klientów

Jaki piec będzie najlepszy do tego specyficznego procesu? Odpowiedź na to pytanie nie zawsze jest prosta. Z tego powodu uruchomiliśmy jedyne w swoim rodzaju, duże i nowoczesne centrum testowe, udostępniające klientom szeroki wybór pieców do testowania.