Vertical Lift Door Box Quenching Furnace Good Sealing Automatic Heat Treatment Oven

What Is Box Type Quenching Furnace?

Box type quenching furnace is a batch periodic industrial heat treatment furnace with rectangular sealed chamber, widely used for hardening, tempering, normalizing, carburizing & carbonitriding of carbon steel, alloy steel, die steel and stainless steel.

Equipped with independent or integrated quenching tank (oil/water/gas cooling), precise PID temperature control system and optional controlled atmosphere system, this box hardening furnace ensures uniform heating, minimal oxidation & consistent hardness of workpieces. Ideal for small & medium batch production of auto components, molds, bearings and aerospace precision parts.

1. Workpieces are loaded into the sealed box furnace chamber via trolley or front door.

2. PLC system runs preset heating curve, heating elements heat the chamber evenly to target temperature.

3. Hold constant temperature for required time to complete austenitization inside metal parts.

4. After heat preservation, workpieces quickly transfer to quenching tank for rapid cooling.

5. Metal internal structure transforms to martensite, realizing high hardness & wear resistance; optional protective atmosphere avoids surface oxidation & decarburization.

1. Side-Open Box Quenching Furnace Front door loading & unloading, external quenching tank. Suitable for small-batch molds and single parts with low cost.

2. Bottom Drop Rapid Box Quenching Furnace The furnace bottom automatically descends and submerges into the quenching tank. Transfer time ≤30 seconds to avoid workpiece temperature drop and decarburization. Designed for precision alloy steel and aerospace components.

3. Trolley-Type Box Quenching Furnace Equipped with automatic loading/unloading trolley, specially for heavy-tonnage forgings, flanges and shaft parts.

4. Controlled Atmosphere Box Quenching Furnace Filled with nitrogen or methanol cracking gas for oxidation-free bright quenching. Ideal for automotive fasteners and gears.

5. Vacuum Box Quenching Furnace Sealed vacuum environment realizes zero oxidation and ultra-smooth surface finish. Applied to high-end molds and aerospace precision components

1. Ultra Uniform Temperature Distribution Fully fiber lightweight lining + 5-side heating elements, furnace temperature uniformity ≤±3~5℃, temperature control accuracy ±1℃, meets CQI-9 automotive heat treatment standard.

2. Energy Saving & Low Operation Cost Aluminum silicate ceramic fiber module lining cuts heat loss, saves 25~35% power consumption vs traditional brick furnaces, low surface temperature ≤45℃.

3. Fast Quenching Transfer Design Bottom drop type model realizes workpiece transfer within 30s, prevents surface decarburization & insufficient hardness; trolley type supports heavy load large workpieces.

4. Intelligent PLC Automatic Control 7-inch touch screen, multi-segment heating curve programming, real-time temperature recording, remote monitoring, overheat & door interlock safety alarm.

5. Customizable & Multi-functional Support electric heating / gas heating, vacuum / nitrogen protective atmosphere, oil / water / gas quenching. Chamber size, loading weight, max temperature all customized per customer production demand.

6. Full Safety & International Certification Door sealing interlock, over-temperature power cut, leakage protection, CE & ISO certified, standard export wooden packaging for sea transportation.

1. Furnace Body: Thick steel plate & section steel welded shell, anti-rust coating

2. Insulation Lining: High-temperature resistant ceramic fiber module, light weight & shock resistance

3. Heating Element: OCr27Al7Mo2 high-resistance alloy strip, long service life

4. Furnace Door: Electric lifting / swing door with double-layer sealing to avoid heat leakage

5. Control Cabinet: PLC + PID intelligent temperature controller, S-type thermocouple

6. Quenching System: Separate oil/water quenching tank with circulation cooling device

7. Atmosphere System (Optional): Methanol cracking, nitrogen input, carbon potential precise control

8. Vacuum System (Optional): Vacuum pump unit for bright vacuum quenching

Our box type quenching furnace serves multiple industrial sectors worldwide:

1.  Automotive Industry: Gears, fasteners, crankshafts, bearings, brake parts, transmission components

2. Mold & Tool Manufacturing: Die steel, cutting tools, punches, measuring gauges

3. Aerospace & Precision Machinery: Alloy structural parts, stainless steel solution treatment

4. Hardware & Standard Parts: Screws, nuts, springs, stampings, flanges, valves

5.  Metallurgy & Forging: Large forgings, shaft parts, steel pipe quenching

6. Lab & Research Institute: Small batch material heat treatment test

Q1: What’s the difference between box quenching furnace and continuous mesh belt furnace?

A: Box quenching furnace is batch-type, flexible for multi-variety small-batch workpieces, low initial investment; mesh belt furnace is continuous mass production for single standard parts with higher hourly output.

Q2: Can box quenching furnace work without protective atmosphere?

A: Yes, air atmosphere model is available for parts with low oxidation requirement. For bright surface & zero decarburization, nitrogen or vacuum atmosphere configuration is recommended.

Q3: Is the furnace size customizable?

A: 100% customized. We design chamber dimension, loading weight, max temperature and quenching mode according to customer’s workpiece size and production capacity.

Q4: What certification can you provide for export?

A: Standard CE & ISO9001 certification; we support third-party factory inspection and issue full set export documents including certificate of origin.