Synchronous adjustable multi-nozzle flame heating and quenching device

Abstract

The invention belongs to the technical field of pipe quenching, and provides a synchronous adjustment type multi-nozzle flame-heating quenching device, which comprises a quenching device body, the quenching device body comprises an annular shell, a first bearing is fixedly embedded in the annular shell, an annular gear is fixedly arranged on the first bearing, a plurality of threaded rods which are aimed at the center are evenly distributed on the circumference of the annular shell, a small gear is sleeved on one end, which is close to the center, of each threaded rod, the annular gear is engaged with each small gear, a screwed nut is arranged on one threaded rod, the screwed nut is fixedly connected to the small gear on the gear shaft, and each threaded rod is hollow. According to the device, by rotating the screwed nut, the small gear corresponding to the screwed nut is driven to rotate, the annular gear is driven to rotate, so that the other small gears can be driven to rotate, thus, all the small gears can rotate, so that all the threaded rods can be simultaneously screwed in or out, and thus, the distance between flame and a pipe can be adjusted, so that heating temperature can be regulated during pipe quenching.

Description

technical field [0001] The invention relates to the technical field of pipe fitting quenching, in particular to a synchronously adjustable multi-nozzle flame heating and quenching device. Background technique [0002] The quenching of steel is to heat the steel to the critical temperature Ac 3 (hypoeutectoid steel) or Ac 1 (Hypereutectoid steel) above the temperature, keep it warm for a period of time to make it fully or partially austenitized, and then quickly cool it below Ms (or isothermal near Ms) at a cooling rate greater than the critical cooling rate to undergo martensite (or bainite). Tensitic) transformation heat treatment process. [0003] Based on the phase transformation critical point of steel, it is necessary to heat above the phase transformation temperature during heating and quenching to form fine and uniform austenite grains, and obtain fine martensite structure after quenching. However, if the heating temperature is too high and the proeutectoid cementi...

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Problems solved by technology

However, the above-mentioned patents adjust the distance between the workpiece and the flame by adjusting the three-dimensional position of the workpiece during work. In the actual production process, the workpieces are mostly medium and large metal parts. burden

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