Vacuum Heat Treatment
Precision Heat Treatment Backed by Nearly 20 Years of Die Casting Expertise
At Ningshing, vacuum heat treatment is more than a processing service—it is a critical part of our integrated die casting mold solution. Leveraging nearly 20 years of experience as the exclusive distributor of premium German KIND & CO die casting mold steel in China, we combine high-performance mold materials, advanced vacuum heat treatment technology, and strict quality control to help customers achieve longer mold life, greater thermal stability, and improved production efficiency.
With strategically located service centers in Ningbo, Dongguan, and Chongqing, and equipped with advanced high-temperature and high-pressure vacuum quenching furnaces, Ningshing provides reliable, consistent, and customized vacuum heat treatment services for die casting molds and hot work tool steels.
Advanced Vacuum Heat Treatment Facilities
Ningshing operates a complete range of professional heat treatment equipment designed for high-performance die casting mold applications.
Our advanced high-temperature & high-pressure vacuum quenching furnaces provide:
- Uniform heating and cooling
- Precise temperature control
- Reduced oxidation and decarburization
- Excellent dimensional stability
- Consistent hardness throughout the mold section
- Optimized microstructure for hot work tool steels
| Funace | Pressure(BAR) | Load(KG) | Workspace(MM) | Set |
| FUL121220 | 15 | 7000 | 1200*1200*2000 | 1 |
| FUL9924 | 15 | 5000 | 900*900*2500 | 1 |
| FUL8814 | 12 | 2500 | 800*800*1400 | 3 |
| IPSEN9912 | 12 | 1500 | 900*900*1200 | 1 |
| IPSEN669 | 10 | 800 | 600*600*900 | 1 |
Complete Vacuum Heat Treatment Process
Stress relief annealing
Performed prior to hardening to eliminate residual stresses generated during machining. Stress relief annealing helps to:
- Relieve machining-induced internal stresses
- Minimize distortion during subsequent heat treatment
- Reduce the risk of cracking
- Improve dimensional stability
- Prepare the die for final heat treatment
Nitriding Treatment
Applied after heat treatment to enhance the surface properties of the die. Nitriding treatment helps to:
- Increase surface hardness
- Improve wear resistance
- Enhance thermal fatigue resistance
- Extend die service life
- Improve resistance to surface damage
Vacuum Quenching & Tempering
Performed in accordance with NADCA heat treatment specifications to achieve the required mechanical properties. This process helps to:
- Achieve the specified hardness range
- Produce the required microstructure
- Improve strength and toughness
- Ensure dimensional stability
- Provide consistent heat treatment quality
Oxidation Treatment
Applied after heat treatment to improve surface performance. Oxidation treatment helps to:
- Improve corrosion resistance
- Enhance mold release performance
- Reduce soldering and sticking during die casting
- Improve surface protection
- Extend mold service life
Cryogenic Treatment
Applied to precision molds, especially high-carbon and high-alloy tool steels, to optimize material performance. Cryogenic treatment helps to:
- Improve dimensional stability
- Transform retained austenite
- Enhance wear resistance
- Increase hardness consistency
- Extend mold service life
NBP Treatment
A specialized surface treatment designed to improve die performance under severe operating conditions. NBP treatment helps to:
- Reduce thermal cracking
- Improve coating adhesion
- Increase surface strength
- Enhance fatigue resistance
- Extend mold service life
Stress Relief Tempering
Performed after heat treatment or during die maintenance to relieve residual stresses accumulated during machining and service. Stress relief tempering helps to:
- Eliminate residual stresses
- Minimize distortion
- Reduce the risk of cracking
- Improve dimensional stability
- Extend die service life
Welding & Annealing Treatment
Specialized welding materials and controlled heat treatment procedures are used to restore damaged dies. This process helps to:
- Ensure high-quality weld integrity
- Reduce residual welding stresses
- Minimize cracking after repair
- Restore die performance
- Extend mold service life
Quality Assurance from Material to Heat Treatment
Raw Material Verification
As the exclusive distributor of German KIND & CO die casting mold steel in China, we ensure certified material traceability, stable quality, and reliable performance from the very beginning.
Process Monitoring
Every vacuum heat treatment cycle is precisely controlled and recorded, including heating, soaking, quenching, and tempering parameters, ensuring consistent hardness, microstructure, and dimensional stability.
Final Inspection
Comprehensive post-treatment inspection covers hardness testing, dimensional verification, and surface condition assessment to ensure compliance with customer specifications and performance requirements.
Curve + audit trail snapshot
Heat Treatment Traceability
End-to-end traceability · Data integrity protected · Generated report view
Partner with Ningshing
for Reliable Vacuum Heat Treatment
Combining premium mold steel resources, advanced vacuum heat treatment equipment, national-standard expertise, and comprehensive quality control, Ningshing provides dependable heat treatment solutions for demanding die casting applications.
Whether you require vacuum quenching and tempering for new molds or specialized thermal processing for mold maintenance and upgrading, our team is committed to delivering stable performance, longer mold life, and consistent production results.