1. The materials used should be corrosion-resistant and of solid quality
When purchasing hinges, it is necessary to choose according to the environment and material characteristics. When purchasing, you can also weigh the weight of similar products from different brands, and it is better to choose products with thick quality.
Steel hinges are prone to rusting and are not suitable for general use in humid environments; Copper hinges have corrosion resistance and antibacterial properties, making them suitable for use in bathrooms; Aluminum hinges have lower strength and are generally thicker; Stainless steel material has good decorative and functional properties, making it a common choice for many households. However, when purchasing, it is important to be careful when merchants use products with surface coatings that may confuse the market.
2. Smooth appearance and excellent surface treatment
First, check if the surface material of the hinge is flat. If you see scratches or deformation, it indicates that the product is produced from waste materials; Secondly, carefully observe the surface treatment of the hinge, make a cut to see if the yellow copper layer is visible, or look inside the hinge cup. If the cup shows the same black color or iron color, it indicates that the electroplating layer is very thin and not plated with copper. If the brightness of the cup color is close to other parts, the electroplating is qualified. Overall, well crafted hinges have a beautiful appearance and small gaps, making them more reliable to use.
3. Large bearing diameter and thick wall plate
The quality of the flat hinge mainly depends on the quality of the bearings. The larger the diameter of the bearing, the better. The thicker the wall panel, the better. Hold one hinge flat in your hand and let the other slide freely, with a uniform and slow speed.
4. Close and listen to the sound of the spring, loosen the hinge test cup
The hinge key serves as a switch, so this is very important. The key is taken from the outer and inner springs of the hinge, as well as the assembly of rivets.
Listen to the sound of the hinge closing, whether it is clear. If the closing sound is dull, it indicates that the spring force is not enough and there is an issue with the material thickness; Check if the hinge cup is loose. If it is loose, it indicates that the rivet is not tightly riveted and is prone to detachment. Close the cup a few times to see if the indentation is obvious. If it is obvious, it indicates that there is an issue with the thickness of the cup material, which can easily cause the cup to explode.
5. Test screws and adjust with force
Use a screwdriver to adjust the up and down adjustment screws three to four times with some force, then remove the screws and check if the teeth on the hinge arm are damaged.
Due to the fact that the hinge arm is made of iron material and is not as hard as screws, it is prone to wear and tear; In addition, if the accuracy of the factory's tooth tapping is not enough, it is easy to cause slipping or inability to twist.