RU2014154335A

RU2014154335A - The method of forming parts

Info

Publication number: RU2014154335A
Application number: RU2014154335A
Authority: RU
Inventors: Анна Владимировна Довыденкова; Валерий Петрович Ялтаев
Original assignee: Закрытое акционерное общество "Завод металлокерамических материалов "Метма"
Priority date: 2014-12-30
Filing date: 2014-12-30
Publication date: 2016-07-20
Also published as: RU2608478C2

Abstract

Способ формообразования деталей, включающий нагревание деталей и выдержку до достижения требуемой кривизны поверхности с дальнейшим охлаждением, отличающийся тем, что заготовку фиксируют на формообразующей поверхности приспособления с заданной кривизной, заготовку с приспособлением устанавливают в печь с защитной атмосферой во избежание окисления детали в процессе нагрева и выдержки, величину скорости нагрева определяют экспериментально из расчета избежания образования трещин на детали вследствие чрезмерного развития деформации ползучести в нагруженных зонах, температуру в печи увеличивают от комнатной до экспериментально определенного значения в интервале 0,8-0,95 температуры плавления материала детали, при которой материал приобретает минимальное сопротивление ползучести, деформируется под собственным весом, повторяя очертания формообразующей поверхности во время выдержки при заданной температуре в течение временного интервала, выбор которого осуществляют экспериментально, достаточного для того, чтобы деталь продеформировалась до заданной кривизны с дальнейшим охлаждением до комнатной температуры.A method of forming parts, including heating the parts and holding until the desired surface curvature is achieved with further cooling, characterized in that the workpiece is fixed on the forming surface of the fixture with a given curvature, the workpiece with the fixture is installed in a furnace with a protective atmosphere to prevent oxidation of the part during heating and aging , the value of the heating rate is determined experimentally from the calculation of avoiding the formation of cracks on the part due to the excessive development of deformation creep in the loaded zones, the temperature in the furnace is increased from room temperature to an experimentally determined value in the range of 0.8-0.95, the melting temperature of the material of the part, at which the material acquires minimal creep resistance, is deformed under its own weight, repeating the shape of the forming surface during holding at a given temperature during a time interval, the choice of which is carried out experimentally, sufficient to ensure that the part is deformed to a given curvature with by further cooling to room temperature.

Claims

A method of forming parts, including heating the parts and holding until the desired surface curvature is achieved with further cooling, characterized in that the workpiece is fixed on the forming surface of the fixture with a given curvature, the workpiece with the fixture is installed in a furnace with a protective atmosphere to prevent oxidation of the part during heating and aging , the value of the heating rate is determined experimentally from the calculation of avoiding the formation of cracks on the part due to the excessive development of deformation creep in the loaded zones, the temperature in the furnace is increased from room temperature to an experimentally determined value in the range of 0.8-0.95, the melting temperature of the material of the part, at which the material acquires minimal creep resistance, is deformed under its own weight, repeating the shape of the forming surface during holding at a given temperature during a time interval, the choice of which is carried out experimentally, sufficient to ensure that the part is deformed to a given curvature with by further cooling to room temperature.