2 results about "Drawing ratio" patented technology

The invention provides a preparation method for forming a particle and short fiber gradient structure on the surface of a Ti-6Al-4V alloy. The problems that a treated surface is poor in forming, crack sensitivity is high, a surface layer is thin and prone to falling off, and a gradient structure is hard to form are solved. The preparation method comprises the steps that firstly TiB2 powder and Ti powder are evenly mixed and pre-arranged on the surface of Ti-6Al-4V; then a sample is preheated to 300-350 DEG C, and temperature is kept stable; and finally an optical fiber laser is used for preparing a composite coating on the surface of the Ti-6Al-4V alloy. The thickness of the composite coating is above 1.5 mm, the structure is dense, no air hole or crack exists, and good metallurgical bonding of the composite coating and the Ti-6Al-4V alloy is achieved. The number of particles of the composite coating is gradually lowered from outside to inside, the number of short fibers of the composite coating is gradually increased, and the draw ratio of the short fibers can be more than 10 times. The integral comprehensive performance of materials is improved by improving the structural distribution of the surface layers of the materials, and therefore the service life of the materials is prolonged.

The invention discloses an ultrahigh molecular weight polyethylene ice skate blade. The ice skate blade is characterized by being prepared from the following materials in parts by weight: 80 to 100 parts of ultrahigh molecular weight polyethylene, 0.3 to 2 parts of coupling agent, 1 to 3 parts of lubricating agent, 5 to 20 parts of glass microbeads or talcum powder, 0.003 to 0.02 part of fluorescent whitening agent OB, 0.1 to 0.2 part of antioxidant, and 0.2 to 1 part of carbon nanotube, wherein the carbon nanotube has the draw ratio of (800-1000) to 1, and is a multi-wall carbon tube; the ice skate blade is easy to machine and mold, and has superior friction and abrasion performance; by adopting the composition, the heat resistance, impact resistance, weather resistance and size stability are improved, a superior performance cost ratio is achieved, the abrasion resistance is improved greatly, and the application range of an ultrahigh molecular polyethylene material, especially the application on the ice skate blade, is extended greatly.