Segmented strengthening production equipment for pipe fittings inflatable thermoforming

Abstract

The invention relates to inflatable hot forming and sectional strengthening tube-producing equipment. The inflatable hot forming and sectional strengthening tube-producing equipment comprises a press machine, and is characterized in that a hot forming and sectional strengthening die is mounted inside the press machine; the hot forming and sectional strengthening die comprises an upper die base and a lower die die; an upper die hard area forming insert and an upper die soft area forming insert are mounted on the lower surface of the upper die base; a lower die hard area forming insert and a lower die soft area forming insert are mounted on the upper surface of the lower die base; end sockets are arranged at the two ends of a workpiece; high-pressure gas passages are formed in the centers of the end sockets respectively; the front ends of the high-pressure gas passages are communicated with the interior of the workpiece; the back ends of the high-pressure gas passages are connected with an axial high-pressure gas system; the axial high-pressure gas system comprises a high-pressure gas generator and a high-pressure gas supercharger; an outlet end of the high-pressure gas generator is connected with the high-pressure gas supercharger; the high-pressure gas supercharger is connected with the end sockets; the end sockets are connected with a gas outlet pipeline. The inflatable hot forming and sectional strengthening tube-producing equipment can sectionally customize components with changing cross section shapes and perimeters according to needs of product design.

Description

technical field [0001] The invention relates to a segmented strengthening production equipment for inflatable thermoforming of pipe fittings, which belongs to the technical field of heat treatment plastic forming. Background technique [0002] As a new type of ultra-high-strength hot-formed steel pipe, automotive boron steel pipe provides the possibility for segmental strengthening technology—the same part can adopt different heat treatment processes in different regions of the part according to the needs of automobile design, so as to obtain Different strength and plasticity. The production process of the soft zone technology for hot-formed boron steel materials is divided into 4 stages: [0003] 1) Heating: heating the boron steel pipe to the temperature required for heat treatment; [0004] 2) Transmission: transfer the boron steel pipe to the mold to be stamped; [0005] 3) Forming: Stamping and forming by mold at high temperature; [0006] 4) Quenching and cooling: ...

AI Technical Summary

Problems solved by technology

Due to the limitations of the pipe making process and the mechanical properties of the material itself, the strength of the applied pipe fittings is limited, and the tensile strength is difficult to exceed 1000MPa

[0018] At present, the hot forming of common boron steel pipes is mostly an ordinary hot stamping process. There is no high-pressure medium inside the forming process, and it can only adapt to products with equal cross-section perimeters, and the product shape is very limited.

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