The era of amorphous metal is advancing at an accelerating rate. As a new high-performance material, amorphous metal has a relatively complete system suitable for multiple application fields and exhibiting different application properties. At present, amorphous metal products have entered the new energy vehicle market and have been successfully applied to the door lock covers of the latest cars of internationally renowned brands. The car door lock system is an important part of ensuring the safety of the vehicle. According to regulations, when the vehicle is being driven or in a collision, the door must not be opened automatically, however, the door must be able to be opened normally after a collision and must have good anti-theft performance. As the main force-receiving element in the locking mechanism of the car door lock, the design of the car door lock cover is also very important.
The door lock latch engages with the door lock to keep the door in a proper position. The latch should meet the following requirements:
1. Very high dimensional accuracy
The latch axis is perpendicular to the door hinge axis
Lock and lock body clearance requirements
Assembly surface accuracy requirements
2. Requirements for high strength and elasticity
In general, the number of times the lock body and latch of the door lock engage open and close (once in a full open and closed cycle of the door lock) should exceed 10,0000. This puts forward higher requirements on the fatigue strength and elasticity of the door lock material.
3. Strong corrosion resistance
In order to ensure the service life of the door lock, the surface of the door lock should be anti-corrosion treated. The most common treatment are zinc-plated passivation surface treatment and zinc-chromium coating surface treatment.
This material will be an excellent choice for automotive door locking materials due to the advantages of amorphous metal.
Benefits of amorphous metal locking cap:
1. High dimensional accuracy, no plastic deformation;
2. High strength (3 times strength of stainless steel).
3. High elasticity (>2%,compared to SUS of 0.2%)
4. High hardness (>500HV,compared to SUS of only 200 HVs).
5. Good corrosion resistance and durability (through 288H salt spray test: intermittent spraying).
The successful application of this automotive door lock cover will open a new chapter in the application of amorphous metal in the automotive industry, and the future of amorphous metal will certainly shine in the automotive industry.