Preparation material of cylinder liner frock pedestal and method for preparing frock pedestal

Abstract

The invention belongs to the technical field of material science and specifically relates to a preparation material of a cylinder liner frock pedestal and a method for preparing the cylinder liner frock pedestal by the utilization of the material. The cylinder liner frock pedestal preparation material provided by the invention belongs to austenite cast iron which comprises the following components: by weight, 2.75-3.0% of C, 1.8-2.3% of Si, P being less than 0.08%, S being less than 0.1%, 14-16% of Mn, 0.04-0.06% of Nb, 0.04-0.08% of rare earth, and the balance iron. In comparison with the prior art, when the frock pedestal prepared from the material provided by the invention is used for high-frequency treatment of a cylinder liner, electromotive force will not generated inside and outside the pedestal, and the size is stable; and through a bore laser technology on the pedestal, an ultrathin high-dislocation martensite is generated around a groove so as to increase frictional force with the cylinder liner. The size stability is prominent, and the using effect is excellent.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a preparation material for a tooling base of a cylinder liner and a method for preparing the tooling base of a cylinder liner using the material. Background technique [0002] Cylinder liner is one of the key components of the engine. At present, its material is mostly alloy gray cast iron, and its structure is pearlite or bainite. When processing the cylinder liner with special requirements, the tool base of the prior art often cannot meet the production requirements. For example, when processing a cylinder liner whose structure is tempered martensite, the inner surface is high-frequency quenched, the quenched layer is 0.8-1.2mm, and the deviation of the upper and lower quenched layers cannot exceed 0.254mm, the inner hole and outer circle of the tooling base are extremely large. Severe deformation is prone to occur, causing the quenched layer on the inner...

AI Technical Summary

Problems solved by technology

When processing cylinder liners with special requirements, the tooling base of the prior art often cannot meet the production requirements

For example, when processing a cylinder liner whose structure is tempered martensite, the inner surface is high-frequency quenched, the quenched layer is 0.8-1.2mm, and the deviation of the upper and lower quenched layers cannot exceed 0.254mm, the inner hole and outer circle of the tooling base are extremely large. Severe deformation is prone to occur, causing the quenched layer on the inner surface of the cylinder liner to exceed the tolerance, which cannot meet the production requirements