When M3 carbon steel countersunk head long screws become bent…

When you want to use long screws urgently, the screws are bent. What should you do? After a pleasant communication with Miss Liang from the sales department of Shi Shi Tong, Mr. Wang from Hangzhou decided to give 200 M3 carbon steel countersunk head long screws with bent rods to Shi Shi Tong for straightening.

According to Mr. Wang’s experience, Ms. Liang first told Mr. Wang the reason for bending M3 carbon steel countersunk head long screws. Because Mr. Wang required to improve the hardness, strength, and corrosion resistance of the screws, the original last factory made heat treatment of the screws, that is, hard surface treatment. After measurement, the rods of the screws are bent from 0.2mm to 1.2mm. The reason for this is that carbon steel screws are usually heat treated as a bunch of screws, so there are always unevenly heated screws, which can cause them to bend. In addition, the rate of furnace temperature rises too fast, quenching temperature is too high or the temperature of the heating furnace is higher than the critical point of carbon steel material and other factors can also make the long screws bent or deformed.

On account of that, the last factory did not tell Mr. Wang in advance what would happen with the heat treatment, Mr. Wang was very angry, but now he is in urgent need of screws, so he listened to the recommendation of a friend in Guangzhou to choose Shi Shi Tong.

Carbon steel long screws after carburizing heat treatment, cooling to a certain temperature will be hardened, and in the heat process, the material will soften, plasticity will increase deformation, and whether the extra-long screws will ensure to not bending or not, it is difficult. Let alone 120mm M3 carbon steel countersunk head long screws! Fortunately, alignment processing can bend the deformation of the long screws to become straightened, then meet Mr. Wang’s requirements.

The long screw is a kind of screw that we often produce. Compared with other screws, it is longer and widely used in engineering, construction, bridges, and other places. We can also provide customized services according to the needs of customers. If you need to customize M3 carbon steel countersunk head long screws, please contact Shi Shi Tong screw supplier.

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