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Deep cold tempering integrated furnace

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Deep cold tempering integrated furnace

Deep cold tempering integrated furnace
1.1 Performance characteristics
1. It has an extremely wide temperature control range, which can meet various needs of users.
2. Adopting a unique balanced temperature regulation method, it can adjust the ideal temperature environment. It has stable and balanced heating, and can achieve high-precision and highly stable temperature control.
3. The control instrument adopts our company's independently developed color touch screen controller.
4. It has a set value that varies with temperature, and can be selected for low or high temperature, with simple operation.
5. The temperature setting inside the test box adopts a keyboard setter, making the setting simple and easy. The instrument has an error correction function when setting the temperature, and after correction, more accurate test conditions can be obtained.
6. Liquid nitrogen refrigeration is used in the refrigeration system.
1.2 Main technical parameter indicators (The following performance indicators are measured after stabilizing for 2 hours without test load)
1.2.1 Temperature performance indicators
Test purpose: Quality inspection, product development, production application, reliability testing
Technical specifications of this freezer
Temperature control range: -196 ℃~room temperature+10 ℃ (temperature range can be customized, up to 500 ℃)
Temperature fluctuation: ≤ ± 0.5 ℃
Temperature uniformity: ± 3 ℃
Cooling rate: ≥ 5-50 ℃/min (cooling rate can be customized according to customer requirements)
Temperature control accuracy: ± 0.01 ℃
1.2.2 Main low-temperature freezer applications:
After heat treatment and quenching, stay at room temperature: After quenching, make sure to evenly cool the inside and outside of the ring to room temperature before cold treatment, otherwise it is easy to crack. After cooling to room temperature, immediately cold treat (generally not more than 30 minutes), otherwise the transformation from austenite to martensite will be stopped.
The temperature of cold treatment is mainly based on the martensitic transformation termination temperature Mf of the steel, and factors such as the impact of cold treatment on mechanical properties and processability should also be considered. For GCr15 steel, -70 ℃ is selected for cold treatment; When there are limitations on the precision requirements of the ring or equipment, the cold treatment temperature can be selected from -40 to -70 ℃; Ultra precision bearings can undergo cold treatment between -70 ℃ and -80 ℃. The undercooling temperature affects the impact fatigue and contact life of bearings.
Although the transformation of a large amount of martensite is completed between cooling to a certain temperature, in order to ensure that the surface and center of a batch of rings reach the cold treatment temperature uniformly, a certain insulation time is required, usually 1-1.5 hours
After cold treatment, the ring is placed in the air and its temperature slowly rises to room temperature before being tempered in a timely manner. The temperature rise should not be too fast, otherwise it is easy to crack; Temper in a timely manner, otherwise the large residual stress inside the ring will cause the ring to crack, generally not exceeding 2 hours.
1.2.3 Deep cold tempering integrated furnace equipment - Function:
1. Improve the hardness and strength of the workpiece
2. Ensure the dimensional accuracy of the workpiece
3. Improve the wear resistance of the workpiece
4. Improve the impact toughness of the workpiece
5. Improve the stress distribution inside the workpiece and increase fatigue strength
6. Improve the corrosion resistance of the workpiece
1.2.4 Deep cold tempering


Model	Studio L x W x H (mm)	Appearance L x W x H (mm)	Freezing capacity (KG)
NYDHL-50	350×320×450	1050×970×950	90
NYDHL-100	450×450×500	1150×1100×1000	160
NYDHL-150	500×500×600	1250×1150×1150	300
NYDHL-225	600×500×750	1350×1150×1300	500
NYDHL-360	1200×600×600	1650×1250×1860	750
NYDHL-400	800×600×850	1550×1250×1400	900
NYDHL-500	800×700×900	1550×1350×1450	1100
NYDHL-800	1000×800×1000	1750×1450×1550	1600
NYDHL-010	1000×1000×1000	1750×1700×1550	2000
NYDHL-015	1500×1000×1000	2250×1700×1550	2600
NYDHL-020	2000×1000×1000	2750×1700×1550	3200
NYDHL-030	3000×1000×1000	3750×1700×1550	5300
NYDHL-series	customized	customized

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Deep cold tempering integrated furnace