4results about How to "Reduce retraction" patented technology

The invention relates to the technical field of stainless steel pipe reaming, in particular to a stainless steel pipe forming device which comprises a stainless steel pipe body and an eddy current measuring instrument used for detecting the pipe wall of the stainless steel pipe body, the eddy current measuring instrument comprises an eddy current measuring instrument body and a measuring probe, and the stainless steel pipe forming device further comprises a base, the upper end of the base is further provided with a gradient stamping and chambering mechanism for chambering the stainless steel pipe body, and a heat exchange mechanism and an auxiliary discharging mechanism are arranged between the feeding mechanism and the gradient stamping and chambering mechanism. Three stainless steel pipe bodies are stamped through the first stamping head, the second stamping head and the third stamping head which are gradually decreased in size correspondingly, gradient stamping is achieved for each stainless steel pipe body in the process, intermittent hole expanding (namely, hole diameter gradually expanding for multiple times) is adopted, the retraction condition is reduced through a small amount of deformation during punching every time, and the punching efficiency is improved. And the qualification rate of stamping and reaming is ensured.

This invention provides a cutting device and a cutting system. The cutting device includes an expandable structure having a radially expanded state and a radially contracted state, for fitting over the balloon of a balloon catheter. The expandable structure includes a cutting portion and a flexible portion along its axial direction, the flexible portion being connected to the axial end of the cutting portion. The cutting device and cutting system of this invention can reduce the probability of disordered tearing of the vascular intima by the balloon, thereby reducing the probability of flow-limiting dissection.

The invention discloses a processing process for a hybrid hair wig with shape memory function, including steps of washing, soaking, tube wrapping, shaping, stress relief, sampling detection and re-baking. The hair to be treated is soaked in a TCEP solution, which can repair the broken old bonds of the hair fibers, repair the damaged hydrogen bonds and disulfide bonds between the macromolecules of the hair fibers, reduce the degree of shrinkage of the hair fibers after shaping, reduce the curl recovery rate of the curly hair, and use a wet heat shaping method to curl and shape the hair. The processing shaping parameters of the shaping treatment for 40 minutes under an environment of 114°C are conducive to water molecules entering the hair fibers during the shaping process of the curly hair, reduce the binding energy between the protein fiber macromolecules, and can make the hydrogen bonds and salt bonds between the fiber macromolecules easy to break up, and the fiber macromolecules are rearranged. A stable peptide chain conformation can be established at the new position of the hair fiber, so that the curly hair has the best shaping effect.

The invention relates to the technical field of hybrid heave compensation systems, and provides a hybrid heave compensation system and method, which have the advantages that the control logic is simple, an umbilical cable winch can realize quick response, active compensation and passive compensation combined action, the compensation precision is improved, and the power consumption is reduced. Comprising an active heave compensation device, a passive heave compensation device and a control system used for controlling the active heave compensation device and the passive heave compensation device, and further comprises a cable ROV, an A-shaped frame crane and a cable, the active heave compensation device comprises a winch and a vertical acceleration sensor, and the passive heave compensation device comprises a pulley block. And the cable sequentially bypasses the winch, the pulley block and the A-shaped frame crane and then is connected with the cable ROV.