SU949407A1

SU949407A1 - Plant for testing materials for contact fatigue under elevated temperatures

Info

Publication number: SU949407A1
Application number: SU813243834A
Authority: SU
Inventors: Александр Иванович Вильчек; Валерий Владимирович Королев
Original assignee: Запорожский Ордена "Знак Почета" Машиностроительный Институт Им.В.Я.Чубаря
Priority date: 1981-02-03
Filing date: 1981-02-03
Publication date: 1982-08-07

Description

() УСТАНОВКА ДЛЯ ИСПЫТАНИЯ МАТЕРИАЛОВ() INSTALLATION FOR TESTING MATERIALS

НА КОНТАКТНУЮ УСТАЛОСТЬ ПРИ ЮВЫШЕННЫХ FOR CONTACT FATIGUE AT YOUNGERED

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Изобретение относитс к. технике испытани механических свойств материалов и касаетс установки дл определени их усталостных свойств при контактном нагружении при повышенных температурах.The invention relates to a technique for testing the mechanical properties of materials and relates to an installation for determining their fatigue properties under contact loading at elevated temperatures.

Известна установка дл испытани материалов на контактную усталость при повышенных температурах содержаща корпус, установленные в нем с возможностью вращени нажимной и опорный диски, каждый из j которых имеет камеру, привод вращени , кинематически св занный с опорным диском, держатель образца, установленный между нажимным и опорным дисками, и нагревательные элементы , размещенные в камерах,A known device for testing contact fatigue at elevated temperatures includes a housing, rotatably mounted pressure and support discs, each of which has a chamber, a rotational drive, kinematically associated with a support disc, a sample holder mounted between pressure and support discs, and heating elements placed in the chambers,

В известной установке нажимной и опорный диски имеют по одной камере , в которых установлено по одному нагревательному элементу 1.In the known installation, the pressure and supporting discs have one chamber each, in which one heating element 1 is installed in each.

Недостаток известной установки состоит в том, что на поверхности ТЕМПЕРАТУРАХThe disadvantage of the known installation is that on the surface of the TEMPERATURES

дисков, а следовательно, и образца, устанавливаетс некоторое посто нное значение температуры, что не соответствует температурным режимам работы некоторых кинематических сопр жений , например зубчатых колес.disks, and hence the sample, establishes a certain constant temperature value, which does not correspond to the temperature conditions of operation of some kinematic interfaces, for example, gear wheels.

Цель изобретени - воспроизведение реальных температурных режимов .The purpose of the invention is the reproduction of real temperature regimes.

Поставленна цель достигаетс The goal is achieved

10 тем, что в установке дл испытани материалов на контактную усталость при повышенных температурах, содержащей корпус, установленные в нем с возможностью вращени нажимной 10 by the fact that in an installation for testing materials for contact fatigue at elevated temperatures, including a housing, installed therein with the possibility of rotation

15 и опорный диски, каждый из которых имеет камеру, привод вращени , кинематически св занный с опорным диском, держатель-.образца, установленный между нажимным и опорными 15 and the supporting discs, each of which has a camera, a rotational drive, kinematically connected to the supporting disc, a sample holder mounted between the pressing and supporting

Claims

20 discs, and heating elements placed in chambers, in each of the discs, additional chambers separated from the main and radially 39 by installed thermal insulating partitions are made, each of which has a heating element installed. The schematic diagram of the installation is shown. The installation includes a housing 1 in which a pressure 2 and support 3 disks are mounted with rotation, between which the sample holder 4 with sample 5 is placed. The support disk 5 is kinematically connected with a rotational drive (not shown). In each of the disks 2 and 3 chambers 6-8, in which heating elements are installed (not shown). The chambers are separated by heat insulating partitions 9. The installation works as follows. Sample 5, made of the test material, is placed between disks 2 and 3, after which a heating element is placed, placed, for example, in chamber 6. This provides a temperature gradient on the disk surface corresponding to the operating conditions of the part, for example, a gear wheel engine The test sample 5 is loaded with a predetermined force and the drive of the rotation of the supporting disk 3 is turned on. At that, the sample 5, rotating between the disks 2 and 3, is affected by contact loads. The tests are carried out before the occurrence of pitting (chipping) on the surface of sample 5. To create different temperature gradients on the surface of the disks (depending on the operating conditions of the machine parts) include heating elements in two, three or more cameras of disks 2 and 3Us of the invention in comparison with the known installation, it allows to carry out tests for contact fatigue of materials used for the manufacture of products, which are. During operation, there are temperature gradients on the surface, such as rolling bearings, gear pairs, cams, etc. Claims An installation for testing materials for contact fatigue at elevated temperatures, comprising a casing, pressure-mounted and supporting discs rotatably mounted therein, each of which has a camera, a rotational drive connected kinematically to a supporting disc. A sample holder installed between the pressure and support discs and heating elements placed in the chambers, characterized in that, in order to reproduce the actual temperature conditions, in each of the disks they are made separate with the main and between themselves radially installed insulating walls chambers, in each of which the heating element is installed. Sources of information taken into account in the examination 1. USSR author's certificate W 360585, cl. G 01 N 3/00, 1970 (prototype). S

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