Dual Oil & Gas Cooling Vacuum Oil Quenching Furnace Manufacturer

Vacuum Oil Quenching Furnace is integrated precision heat treatment equipment combining vacuum heating and rapid oil cooling. The standard double-chamber horizontal design separates heating chamber and oil cooling tank.

Workpieces are heated & soaked under high vacuum or high-purity nitrogen atmosphere to isolate oxygen, eliminating oxidation and decarburization. After heat preservation, workpieces are rapidly transferred into quenching oil tank for forced cooling, refining metal microstructure to improve hardness, wear resistance and toughness significantly.

Compared with atmospheric furnaces: parts keep bright surface without oxide scale, no secondary sandblasting & pickling needed. Compared with pure gas quenching furnaces: faster cooling speed, compatible with thick-section & high-hardenability alloy steel. Widely adopted for precision molds, automotive fasteners and aerospace components.

1.Loading: Place workpieces on charging trolley, seal door, vacuum pump evacuate chamber to 10⁻¹~10⁻³Pa

2.Vacuum Heating: Graphite heating zone heats evenly, hold temperature per material process curve

3.Fast Transfer: Variable-speed trolley with slow-in & fast-quench mode, transfer finished within 45s

4.Oil Quench Cooling: High-flow stirring nozzles generate turbulent quenching oil for full-surface rapid cooling

5.Optional Gas Cooling: Built-in high-pressure nitrogen gas cooling system to reduce deformation for thin parts

6.Unloading: Release vacuum pressure and take out bright, decarburization-free finished parts

1.Double-chamber Body: Octagonal heating chamber + oil cooling tank, staggered tooth flange for zero leakage under positive/negative pressure

2.Heating & Insulation System: Graphite rod heaters + multi-layer graphite felt heat shield, temperature uniformity ±5℃

3.Vacuum Unit: Rotary vane pump + Roots pump + molecular pump assembly, stable ultimate vacuum

4.Oil & Gas Cooling System: Large-volume oil tank, external heat exchanger, stirring circulation device, high-pressure gas cooling duct

5.Intelligent Control System: 10-inch touch screen PLC automatic control, process recipe storage, auto fault alarm & safety interlock protection

1.Premium Workpiece Quality: Vacuum oxygen isolation ensures bright surface, zero oxidation & decarburization, tiny deformation. No secondary sandblasting needed, cut post-processing cost over 30%.

2.Wide Material Compatibility: Higher cooling rate than gas quenching furnace, works for HSS, high-chrome die steel, thick alloy steel, stainless steel & hard-to-harden metals.

3.Dual Cooling Integrated Design: Switch freely between oil quenching & high-pressure gas cooling, suitable for thin & thick workpieces, multi-process covered by one furnace.

4.Energy-saving & Long Service Life: Graphite heaters service life over 5 years, low heat loss. Double-chamber design avoids frequent heating chamber cooling, save power & boost production efficiency by 40%.

5.Fully Automatic Operation: One-click heat treatment recipe, auto control of temperature, vacuum, transfer & cooling, easy operation for new operators, minimize human error.

6.Excellent Sealing & Low Maintenance: Compound gate valve & staggered tooth flange guarantee outstanding air tightness, low annual air leakage rate, simple daily maintenance.

7.Full Customization: Customize effective chamber size, loading capacity, max temperature and vacuum system per customer production line demand.

Materials

Die steel, high-speed steel, bearing steel, spring steel, alloy structural steel, martensitic stainless steel, titanium alloy, high-strength tool steel

Application Industries

1.Precision Molds: Stamping mold, plastic mold, die-casting mold, cutting tools, punches

2.Automotive Manufacturing: Gears, bearings, fasteners, pistons, shaft parts

3.Aerospace: Landing gear, high-strength structural components, aviation cutting tools

4.Hardware Cutting Tools: Drills, end mills, taps, inserts, measuring tools

5.Heavy Machinery: Hydraulic valves, precision sleeves, wear-resistant spare parts

Q1: How to choose between vacuum oil quenching furnace & gas quenching furnace?

A: Oil quench for thick-section, high-hardness die steel & HSS with faster cooling rate; gas quench for thin, easy-deform aluminum & stainless steel. Our integrated oil+gas cooling model covers both processes.

Q2: Do workpieces need polishing or sandblasting after quenching?

A: Vacuum atmosphere avoids oxidation & decarburization, parts stay bright metallic finish. Standard products require no sandblasting or pickling, cut post-processing cost largely.

Q3: Can the furnace match 415V 60Hz local power supply?

A: Global voltage customization available, electrical system fully tested before delivery, matching transformers & plugs supplied.