1. The magical use of screws in life
. Stainless Steel Screws 1. First, remove the sludge generated by the broken screw and the broken end, and kill the center of the section with a stick. Then use an electric drill to install a drill bit with a diameter of 6~8mm on the center rod of the section
drilling. After drilling, remove the small drill bit and replace it with a 16mm diameter drill bit, continue to enlarge and drill through the broken bolt hole.Screw Series
2. Take a strip with a diameter of 3.2mm, apply a small current in the damaged bolt hole, and stack it from the inside to the outside. Cut off half of the full length of the bolt at the beginning of the pile. At the beginning of heap
The arc should not be too long, so as not to burn through the outer wall of the broken bolt. Build up to the upper end of the broken bolt, and then continue welding to make a cylinder with a diameter of 14-16mm and a height of 8-10mm
body.
3. After surfacing, tap the end face with a hand hammer to make the broken bolt vibrate in the axial direction. The heat generated by the previous arc and the subsequent cooling, combined with the vibration at this time, will make the broken
The thread between the bolt and the body is loose,
4. After careful observation and knocking, it is found that there is a small amount of rust leaking from the fracture. It is recommended to put the M18 nut on the surfacing stud and connect the two together.
5. There are two states of hot and cold after welding. Use a socket wrench to tighten the nut, and tap the surface of the nut with a small hand hammer when tightening the nut.
Security Screws 6. After taking out the damaged bolts, use a suitable wire hammer to process the wire fasteners in the frame to remove rust and other sundries in the holes.
2. What are the physical properties of stainless steel screws?
Stainless steel screws usually refer to steel screws that are resistant to corrosion by air, water, acid, alkali, salt or other media. Stainless steel screws are generally not easy to rust, durable, and suitable for
In environmental protection equipment, medical equipment, communication equipment and other fields.
Comparing the physical properties of stainless steel and carbon steel, the density of carbon steel is slightly higher than that of ferritic and martensitic stainless steel, and slightly lower than that of dry austenitic stainless steel. The cathode of stainless steel is followed by that of carbon steel.
Ferritic, martensitic, austenitic. The order of coefficients of linear expansion is similar, with austenitic stainless steel being the highest and carbon steel being the lowest. Carbon steel, ferritic stainless steel and martensitic stainless steel are all
Magnetic, austenitic stainless steel is not magnetic, but its cold work hardening to form a tensile phase transition will produce magnetism, which can be used to eliminate martensite structure and restore its non-magnetic properties.
