Application

As the basic process equipment for industrial production, the performance of metal molds directly affects the production efficiency and product quality in the fields of automobile manufacturing, home appliance production, consumer electronics, etc. In typical application scenarios such as stamping, injection molding, and die-casting, the molds are subjected to high temperature environments of 300-800℃, high pressure loads of 500-2000MPa, and impact loads of dozens of times per minute for a long time. In particular, the stamping molds of automobile cover parts need to withstand impact forces of more than 2000kN. Such harsh working conditions lead to typical failure problems such as chipping of stamping mold cutting edges, collapse of injection mold parting surfaces, and cracking of die-casting mold cavities. Among them, the embrittlement of material grain boundaries caused by high temperature and high pressure corrosion can shorten the life of the mold. Taking aluminum alloy die-casting as an example, when the mold is repeatedly flushed with 670℃ aluminum liquid, an average of 0.2-0.5mm corrosion layer will be produced on the surface of the cavity every 5000 molds.

Working environment: salty corrosive water or air Marine vessels and offshore equipment are in extreme environments of high salt spray and high humidity for a long time. The penetration of salt (chloride ions) and the electrochemical reaction of seawater accelerate metal corrosion. At the same time, high-speed water flow impact, alternating loads and high temperature conditions (such as the temperature near the engine combustion chamber can reach above 500°C) form a multi-factor coupling damage environment, which poses a severe challenge to the durability of parts.

Working environment: The temperature of the boiler tube wall of the coal-fired unit reaches 500-650℃ and the pressure exceeds 22MPa. The main pump bearings of the nuclear power plant are subjected to 10^6Pa high pressure and boric acid corrosion. The chemical reaction device is exposed to H2S/Cl⁻/acidic medium (pH≤3) and is continuously eroded by particle-containing fluids with a flow rate of 8-20m/

The industrial working environment for critical mechanical components is extremely harsh, characterized by high temperature, heavy load, severe impact, frequent thermal cycling, and cooling-induced corrosion. These conditions commonly exist in sectors such as metallurgy, mining, and heavy machinery manufacturing, where components are subjected to continuous stress and environmental aggression. High-temperature environments exceed 500°C in many cases, causing material softening and accelerated chemical reactions, while thermal cycling (temperature fluctuations exceeding 300°C per cycle) introduces thermal stress that weakens structural integrity. Cooling systems, often using aqueous solutions with corrosive ions (e.g., Cl⁻, SO₄²⁻), create a dual-attack scenario of mechanical wear and chemical corrosion.

High Load & Impact: Drill collars and rods endure axial loads up to 500 tons and torsional stresses exceeding 100 MPa during directional drilling. Sudden rock formations can induce impact forces of 2,000 J, leading to fatigue cracks in drill rods.

Underground coal mining environments present extreme challenges to machinery durability. With humidity levels often exceeding 90% and the presence of corrosive gases such as H₂S and SO₂, metal components undergo accelerated electrochemical corrosion. For example, hydraulic prop cylinders, critical for maintaining tunnel stability, are prone to surface rust that compromises sealing performance, leading to hydraulic system failures. Additionally, coal dust particles (Mohs hardness 3-4) act as abrasive agents, causing severe wear on transmission parts like sprockets and scrapers. High-speed coal dust can reduce the service life of these components by up to 40% compared to cleaner environments.