HANNOVER MESSE 2018,
23 - 27 April
The know-how of surface laser hardening is based on displacement with definite speed of laser focused beam along designed trajectory. High rates of heating and cooling of thin surface layer are due to high densities of the power in the treatment spot (up to 109 W / m2); provide specific surface structure formation with an unique complex of physical -and mechanical properties. The heat treatment of a surface is provided without a solid heating-up of the parts, that makes possible such kind of hardening for intricately shaped parts, large-sized ones, to name but a few, hardening of which is impossible by the traditional methods.
The laser hardening is effective for carbon alloyed tool steels, cast irons and hard alloys.
The process can be conducted both with flashing, and without flashing of a surface with a conservation of the source microtexture. The structure of a finely dispersive needle-like martensite with 60-65 HRC hardness is formed, and the surface layer microhardness reaches (1-1,2) 104 MPa for steels with carbon content up to 0,95-1,0 %. Wear resistance is increased by 2 to 3 times as compared with volumetric-hardened steels. The layer ranges in depth from 0,3 to 1 mm.
The know-how of laser alloying provides an application of a layer of the alloying constituents on a hardened surface and its consequent penetration by a laser beam. In addition, with all advantages of laser hardening the method allows to perform the materials hardening (strengthening) which are not exposed to one, as an example, low-carbon steels, austenitic steels, non-ferrous alloys. The choice of alloying coating and laser treatment conditions provides a means of the layers formation with a required complex of physical-and mechanical properties. The layer ranges in depth from 0,3 to 1 mm. The enhancement of wear resistance lies in the range of 3 ... 5 times as compared with volumetric-hardened articles.
The proposed electronic balance makes it possible:
- to weigh goods of 6, 15, 30, 150, 300 kg weight;
- to make random weighing (including from an external device);
Parts are intended for the application in heavy loaded friction pairs such as spiral transmission, driving screw-bush, oil mining equipment, transport, ...
Blades for precious stones sawing.
Blades are intended for mechanical sawing of diamond crystals and other precious stones. Blades are manufactured from tin-based ...
Thermodiffusive treatment with use of BESTO-Nicar medium.
Assigning and fields of application:
BESTO-Nicar medium is dedicated for finishing thermal chemical ...