Ji Baohua

TL;DR: In this article, the authors proposed a 5CrNiMo die sulphonitrocarburizing heat treatment process, in which the surface hardness of the die is improved, so that the die cannot deform easily, and the service life is prolonged by 60% or above.

TL;DR: In this paper, the utility model discloses an automatic charging and discharging device, including the storage platform, pass through the heating furnace that carries the long heating chamber of band -pass that material platform and level set up of slide intercommunication with the storage platforms, carry material platform one end set up in heating furnace import, the other end are provided with along the flexible propelling movement cylinder of heating furnace heating chamber direction.

TL;DR: In this article, a 485 driven spiral bevel gear of series combination forging is described, its characteristics are characterized in that: differential mechanism casing on one side of including driven spiral gear and being located the gear, driven spiral wasvel gear and be located as an organic wholeization of the differential mechanisms casing forging structure of gear one side, the passive bevel gears combination forging was compared with prior art, comprehensive cost reduces, has the advantage that intensity is good, longe -lived, the car handling capacity is strong, the lightweight is good

TL;DR: In this paper, a heat treatment process and device for 21NiCrMo5H steel forge pieces is presented, where a hanging heating mode is adopted in the preheating step, the workpieces are heated independently and do not interfere with one another, and overall heating and uniform heat preservation temperature are guaranteed.

TL;DR: In this paper, a pit-type vacuum heat treatment furnace and a heat treatment process thereof are described, and the authors reveal a novel pit-like vacuum heat-treatment furnace, which consists of a furnace body 1, a cover body 2 and a motor 3.