36results about How to "Sufficient binding strength" patented technology

The purpose of the present invention is to provide a method for producing a metal laminate material with higher production efficiency while maintaining sufficient bonding strength. Disclosed is a method for producing a metal laminate material by bonding two plates respectively made of materials M1 and M2, wherein: each of M1 and M2 is a metal or an alloy including at least one type of element selected from the group consisting of Mg, Al, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, Nb, Mo, Pd, Ag, In, Sn, Hf, Ta, W, Pb, and Bi; the method comprises a step for subjecting the surfaces to be bonded of the two plates to a sputtering treatment by inert gas ions in a vacuum such that an oxide film on the surface layer remains, a step for temporarily bonding the two plates by roll bonding, and a step for bonding the two plates by heating; and, if the melting point of M1 is Tm1 (K), the melting point of M2 is Tm2 (K), and Tm1>Tm2, the temperature of the heat treatment is higher than or equal to 0.45Tm2 and lower than 0.45Tm1 (and does not exceed Tm2).

In a resistance welding method and a resistance welding apparatus which prevent a decrease in bonding strength between a lead wire and a metal member due to a partially formed current flow path and which immediately removes a defective component from a manufacturing line, a plurality of second welding electrodes in contact with the metal member is provided so as to provide a plurality of current flow paths, and accordingly, to prevent an unevenly distributed current flow. The bonding strength is measured to determine whether it is satisfactory or not on the basis of currents flowing through the second welding electrodes. Also, the electronic component is fixed by the second welding electrodes after resistance welded.

The invention provides a straw wall material brick and a making method thereof. The straw wall material brick comprises a first brick body and a second brick body, wherein the first brick body and the second brick body are symmetrically arranged to form the straw wall material brick. The core portions of the first brick body and the second brick body are compacted straw bodies, and the outer sides of the compacted straw bodies are coated with a waterproof agent and a fire retardant. By the adoption of the straw wall material brick, rapid erection of a simple building or a building having lower usage requirements or a temporary building can be achieved. In addition, semi-circular grooves and semi-circular protrusions are arranged at the connecting positions of the straw wall material bricks, a structure formed after combination is firm and stable, and the brick bodies can have enough combination strength. Furthermore, the inner cores are the compacted straw bodies, and the overall self weight of the building is greatly lightened under the situation that a necessary supporting force is provided.

The invention relates to a motor rotor which comprises a hub, a permanent magnet and a mandrel; wherein the hub is provided with an inner surface and an outer surface; an assembly hole is formed at the center of the inner surface of the hub; the permanent magnet is arranged on the inner surface of the hub in an encircling manner; the mandrel is provided with two ends, one end is a binding end, and the binding end is fixed in the assembly hole of the hub and is provided with a binding piece; the binding piece radially extends to the peripheral surface of the mandrel and is embedded in the hub.Therefore, the binding piece can radially extend and the binding area between the hub and the mandrel is increased, so that the excellent binding strength is provided, and simultaneously, the whole motor has miniaturized or thin design space.

The invention discloses a manufacturing technology of a high-performance composite plate. The manufacturing technology comprises the steps that corrosion resistant metal materials are selected and smelted, and a proper amount of a titanium carbide alloy is added in the smelting process; a pipe blank is formed by smelted metal materials through centrifugal complex casting and subjected to heat treatment, the inner and outer surfaces of the pipe blank are cleaned through a turning lathe and a boring lathe, and the pipe blank is equally cut into three arc blocks through an ion cutting machine; the cut arc blocks are subjected to forging and pressing, leveling and heat treatment, an alloy plate is trimmed through a milling machine, the inner and outer surfaces of the alloy plate is cleaned through the turning lathe and the boring lathe, and the alloy plate with titanium carbide accumulated on one side is manufactured; and a low-carbon steel plate or a stainless steel plate is selected, cut and subjected to surface treatment, the low-carbon steel plate or the stainless steel plate and the manufactured alloy plate are buckled together, a double-metal welding body is heated and forged repetitively, and a baseplate and the alloy plate are firmly pressed together to manufacture the high-performance composite plate. According to the manufacturing technology, the high-performance composite plate is high in corrosion resistance and good in welding performance and toughness and has enough bonding strength, heat treatment distortion is greatly improved, and the manufacturing technology is widely applied to rolling mill slide plates, heat resistant and corrosion resistant guide plates and the like.