SV 19500/15, SV 30500/15 and SV 28900/01 furnaces up to 150 °C

Dryers for annealing plastic lamps after welding so as to eliminate stress

It was critical for the customer that we minimise dust levels within the furnace. To do so, we had to avoid exposed insulation. Everything had to be encased in sheet metal or special silicone-free insulation. Another requirement was to maintain a precise temperature distribution within the furnace, which we monitored right by the parts. Since this was a continuous furnace, we measured the temperature distribution using contactless sensors. Using an air circulation system, we achieved the required value of ± 3 °C. 
 
For the annealing of the plastics to eliminate stress after welding, we manufactured two chamber dryers with a vertical chain conveyor and one with a horizontal chain conveyor. The vertical chain conveyor minimises space requirements. The multi-zone forced air circulation system, meanwhile, ensures perfect temperature distribution right by the charge.
 
The lamps are painted after heat treatment. They must be dust-free for painting, and so the furnace’s entry and exit connect to a super-clean space so as to meet production requirements. The furnace’s internal space is likewise structurally designed to minimise dust levels.

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What’s great about this facility

  • minimal dust levels
  • a chain conveyor for maximum utilisation of the built-up space
  • multi-zone circulation for a superb temperature distribution of ± 3 °C
Annealing-furnaces.jpg
Annealing-furnaces.jpg

Technical parameters

SV 30500/15
 
  • Max. temperature: 150 °C
  • Operating temperature: 125 °C ± 3 °C
  • Internal dimensions (w × h × d): 1870 × 2770 × 5900 mm
  • Charge: headlamp cover × maximum dimensions of 710 × 250 × 160 mm (5 pcs per shelf, spacing of pcs 250 mm)
  • Charge weight: approximately 2500 kg
  • Conveyor type: chain conveyor with 13 shelves
  • Shelf dimensions: 1250 × 750 mm
  • Conveyor cycle: 300 s
  • Furnace capacity: 60 s/pc
  • Heating input: 70 kW
  • Voltage: 3/N/PE 400/230V AC 50 Hz
  • Control system: SIMATIC S7-1200
  • Installation place and year: Czech Republic, 2014
 
SV 19500/15
 
  • Max. temperature: 150 °C
  • Recommended operating temperature range: 100–130 °C
  • Internal dimensions (w × h × d): 3200 × 6100 × 2700 mm
  • Conveyor type: chain conveyor with 19 shelves
  • Shelf’s loading surface (w × h × d): 840 × 360 × 800 mm
  • Furnace capacity: 1 component/60–70 s, 200,000 pcs/yr
  • Heating input: 45 kW
  • Control system: PLC Siemens
  • Installation place and year: Czech Republic, 2010
 
SV 28900/01
 
  • Max. temperature: 100 °C
  • Internal dimensions (w × h × d): 5690 × 5100 × 2510 mm
  • Number of shelves in the furnace: 25
  • Shelf’s loading surface (w × h × d): 3100 × 360 × 600 mm
  • Furnace capacity: 130 lamps/hr
  • Heating input: 37 kW
  • Control system: PLC Siemens
  • Installation place and year: Czech Republic, 2010
Over 13,000 furnaces manufactured
Our own team of maintenance technicians
25-member design team
6 custom projects per month
Testing of your specific charges
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https://www.lac.cz/en/furnaces-and-dryers/custom-made-furnaces/furnaces-for-the-automotive-industry/annealing-furnace-for-eliminating-stress-in-plasti/sv-19500-15,-sv-30500-15-and-sv-28900-01-furnaces | https://www.lac.cz/en/furnaces-and-dryers/custom-made-furnaces/furnaces-for-the-automotive-industry/annealing-furnace-for-eliminating-stress-in-plasti/sv-19500-15,-sv-30500-15-and-sv-28900-01-furnaces