43results about How to "Good thermal hardness" patented technology

The embodiment of the invention provides a zinc alloy for manufacturing a die. The zinc alloy comprises the following components in percentage by weight: 5 to 22 percent of aluminum (Al), 0.005 to 0.03 percent of magnesium (Mg), 1 to 10 percent of copper (Cu), 0.05 to 0.5 percent of rare earth, 0.01 to 0.05 percent of boron (B), 0.05 to 0.2 percent of titanium (Ti), 0.05 to 0.2 percent of manganese (Mn) and the balance of zinc (Zn), wherein the weight percent sum of the components is 100 percent. The Al is an important element of the zinc alloy, and has good heat resistance and casting property. The Cu is an important enhancing element in the zinc alloy, the Cu and the Zn can form a CuZn3 metal compound, and the Cu can improve the strength and plasticity of the zinc alloy. The Mg, Re, B, Ti, Mn and the like serving as trace additive elements can play a role in thinning crystal grains and reducing component segregation and 'bottom shrinkage' phenomenon. The hardness and abrasion resistance are further improved; and on the premise of ensuring that the tensile strength is basically not changed, the dimensional stability, die making precision, corrosion resistance and the like of the alloy are obviously improved.

The invention discloses a gear cleaning device for a gear roller of a titanium sponge single roller crusher. The device mainly consists of the gear roller (1), a housing case (2) and a gear cleaning knife (3); the gear cleaning knife (3) is fixed at one side of the gear roller (1) of the crusher and is positioned oppositely to a jaw plate; a gap between the knife edge of the gear cleaning knife (3) and gear spaces of the gear roller (1) is adjustable; when the crusher is in work, the gear roller (1) rotates to squeeze with the jaw plate for cutting titanium sponge; and at the same time, the gear cleaning knife (3) picks out the titanium sponge on the gear roller (1), and the principle is similar to the process of metal-cutting. The gear cleaning device provided by the invention has the technical effects that no additional power source or transmission mechanism are needed, and a gear can be cleaned by utilizing the self-power of the crusher; the gear cleaning knife structure is of a combined type, so that the cost is low; gaps between gears can be adjusted according to a practical application situation, so that the capability of cleaning the gear is improved; the gear cleaning knife head is good in thermohardening property and high in strength; and the knife edge of the knife head is additionally provided with a rake angle and a relief angle, so that the force for cleaning the gear is reduced, and the friction is reduced.