CN201972752U

CN201972752U - Alloy valve lifter

Info

Publication number: CN201972752U
Application number: CN 201120109489
Authority: CN
Inventors: 谭建伟; 阳宇; 李严帅; 廖建洪; 王军; 赵美先
Original assignee: Mianyang Fulin Precision Machinery Co Ltd
Current assignee: Mianyang Fulin Precision Machinery Co Ltd
Priority date: 2011-04-14
Filing date: 2011-04-14
Publication date: 2011-09-14
Anticipated expiration: 2021-04-14

Abstract

The utility model discloses an alloy valve lifter, relating to an alloy valve lifter which has different structures and materials at each part to adapt different work environments. The purpose of the utility model is to provide an alloy valve lifter which has high hardness and good abrasive resistance. In order to achieve the purpose, the alloy valve lifter comprises a lifter body (tube body) and a working face welded (or bonded and riveted) at the bottom of the lifter body. A transition layer is arranged between the lifter body and the working face and can cause the lifter body and the working face to be mutually firmly combined. The lifter body is made of steel (or aluminum alloy), and the working face is made of a hard alloy material. The alloy valve lifter is mainly applied in air intake and discharge mechanisms of engines.

Description

A kind of alloy valve tappet

Technical field

The utility model relates to a kind of motor valve tappet, particularly relates to a kind ofly having different structure and material to adapt to the alloy valve tappet of different operating environment in its various piece.

Technical background

Tappet is the vital part of engine breathing mechanism, raising along with new work engine rotating speed and pressure, the working surface that requires tappet to contact with cam has can be in high speed, under the situation of high pressure and high contact stress not by the characteristic of inordinate wear, but existing whole steel part tappet can not meet the demands, their hardness is not very high, use through a short time all is prone to inordinate wear, make the valve clearance of motor become big, produce noise, cause engine combustion not exclusively to cause engine power to descend, fuel consumption increases, exhaust emissions exceeds standard, adopt the tappet of whole alloy cast iron material, though wear resistance is good, cost of material is high.

The model utility content

The purpose of this utility model provides a kind of alloy valve tappet with high hardness and excellent abrasive resistance.

For achieving the above object, the technical solution adopted in the utility model is: a kind of alloy valve tappet, comprise tubular shaft and be fixed on its bottom working surface, be provided with one deck transition layer that can make its mutual strong bonded between shaft and the working surface.

In the such scheme, the material of the shaft of described tubular is steel part or aluminum alloy.

In the such scheme, the material of described working surface is a Hardmetal materials.

From above-mentioned every technical characteristics of the present utility model as can be seen, its advantage is: because the working surface of tappet bottom has adopted the cemented carbide that contains Tungsten carbite, titanium carbide, tantalum carbide etc. to make, therefore this tappet has promptly possessed high wear resistance and heat resistance, have and to bear higher load and harsher working environment, particularly suitable modern high speed motor, because of alloy material is a part, so have lower cost of material.

Description of drawings

The utility model will illustrate by way of compared with accompanying drawings and combined with example:

Fig. 1 is the utility model structure cross-sectional schematic;

Wherein reference character 1 is that the shaft 2 of tubular is that working surface 3 is transition layers.

Embodiment

The utility model is described further by embodiment below in conjunction with accompanying drawing:

A kind of alloy valve tappet as shown in Figure 1, the working surface of tappet is a Hardmetal materials, have high wear resistance and better heat-resisting and corrosion resistance to reach working surface, the shaft of tappet is steel part or aluminum alloy material, make shaft reach due intensity, plasticity and toughness, because the working surface of tappet and the shaft of tappet tubular are to be bonded together by the method for welding (or bond, rivet), so between them, also being provided with one deck transition layer, so that firm metallurgy combination to be provided.

Wherein, the material cemented carbide of the working surface of tappet is made up of two-part: a part is the sclerosis phase: another part is a binding metal.

Sclerosis is the carbide of transition metal in the periodic table of elements mutually, and as Tungsten carbite, titanium carbide, tantalum carbide etc., the existence of sclerosis phase has determined alloy to have high hardness and wear resistance.

Binding metal generally is the iron group metal, and commonly used is cobalt nickel.

Disclosed all features in this specification except mutually exclusive feature, all can make up by any way.

Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.

Claims

1. alloy valve tappet is characterized in that comprising the shaft (1) of tubular and is fixed on the working surface (2) of its bottom, is provided with one deck transition layer (3) that can make its mutual strong bonded between shaft of tubular (1) and the working surface (2).

2. a kind of alloy valve tappet according to claim 1 is characterized in that the material of the shaft (1) of described tubular is steel part or aluminum alloy.

3. a kind of alloy valve tappet according to claim 1 and 2, the material that it is characterized in that described working surface (2) is a Hardmetal materials.