43results about How to "Physical performance balance" patented technology

The invention relates to a leather retanning method. The method comprises the following steps of: water washing, rewetting to soften, retanning with chrome, neutralization, dyeing to fill, adding grease, dyeing in set and the like; and finally, drying, finishing and coating to obtain the finished product, i.e. leather. In the invention, the process of retanning with chrome is adjusted and a proper environment-friendly tanning agent is adopted, so the content of chrome in chrome liquid can be reduced, the fullness and the toughness of the leather is effectively improved, dyed color is uniform,the heat and humidity resistant stability of the leather can be improved, the physical performances of the leather are uniform, and the finished leather is soft and bend-resistant and is high in tensile strength; the amount of used water in the processing process is small, and the generated industrial waste water is little, so environment protection is facilitated; and the process period is relatively short, so the electric energy consumption is low, the cost is low, and the method has a better economic benefit.

The invention belongs to the fields of metal materials and metallurgy, aims to solve the problems that impurities of alloy are hard to separate, ingredients are nonuniform, the utilization rate of rare earth element is low, precipitated rare earth phases are nonuniform, the segregation is more, and effects for the quality is great by adopting the manner that alloying, rare earth process, and casting are conducted in a pot during a conventional manufacturing technology process, and provides a manufacturing technology for rare earth-magnesium alloy. According to the manufacturing technology, conducting adding, refining, and degassing with hexachloroethane degassing agent of alloy element in a melting pot; and pouring into a second pot after standing for 30 min, adding rare earth, and standing and casing. A manufactured bar material has uniform and stable metallographic structure and clear crystal boundary; the product is without pore, shrinkage cavity and cold shut, and the surface is smooth and without rugosity; the purity, ingredients, and equilibrium of physical properties of the product are guaranteed, the grain size of the alloy is refined, very stable dispersed phase is precipitated, and the rigidity and the decay resistance of texture are improved; therefore, product performances are allowed to be superior to an ordinary alloy standard.

The invention discloses a method and device for heat treatment of a steel ingot. The heat treatment method comprises the following steps: 1. First heating: sending the steel ingot to a heat treatment furnace to be heated to 727-800°C; 2. First annealing: heating The final steel ingot is kept for 2 hours, and the furnace is cooled to 500-600° C. and then air-cooled. The invention can eliminate the stress inside the steel ingot, prevent the surface of the steel ingot from cracking, and reduce a certain hardness by performing sequential annealing treatment after the steel ingot is cast. Fire treatment refines the grains inside the ingot, increases the hardness and toughness of the ingot, and then anneals again to make the elements in the ingot diffuse in a solid state to reduce the inhomogeneity of chemical composition, mainly to reduce the inhomogeneity within the grain size. The uneven chemical composition makes the physical properties of each position of the steel ingot balanced, and through the heat treatment device, the steel ingot can be easily taken out of the furnace after heating, which is convenient for people to take out and load materials.

The invention relates to an electrochemical deposition device, belongs to the technical field of electrochemical reaction devices for laboratories, and solves the technical problem that the depositionrate is low in an electrochemical deposition process. The device comprises a box body, a cover body and electrodes; slots are formed in the outer side walls of the box body respectively; permanent magnet blocks are installed in the slots; a gas guide plate is installed in the middle of the bottom surface of the box body; a liquid outlet and a gas guide pipe are formed / arranged in / on the side walls of the box body respectively; guide rails are vertically and upwards arranged at the four corners of the inner wall of the box body respectively; push rods are arranged in the guide rails; electrodesliding grooves for installing the working electrode, the reference electrode and the counter electrode are formed in the middle of the cover body; and the cover body is further provided with electrode positioning sliding grooves used for accurately controlling the relative positions of the electrodes. According to the device, the positions of the electrodes can be manually adjusted, and the working electrode and the counter electrode can be synchronously adjusted to move oppositely or backwards, so that the accurate control of the relative distance between the electrodes is realized, the electrochemical deposition rate is accelerated, and the surface quality and the physical property of a coating are ensured.