CN2856666Y

CN2856666Y - Bimetal composite delivery pipeline made of vacuum negative pressure cast special alloy

Info

Publication number: CN2856666Y
Application number: CN 200420103237
Authority: CN
Inventors: 鲍崇高; 侯陈安; 孙军平
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-20
Filing date: 2004-12-20
Publication date: 2007-01-10
Anticipated expiration: 2014-12-20

Abstract

A bimetal composite delivery pipeline made of vacuum negative pressure cast special alloy comprising a pipeline outer layer, and a wear resistant composite layer. The wear resistant composite layer has a casted pipeline inner layer attached on the inner surface thereof. The thickness of the pipeline inner layer is less than that of the wear resistant composite layer and the pipeline outer layer. The wear resistant composite layer is made of high chromium alloy material; the pipeline inner layer and outer layer are made of common carbon steel materials. The utility model utilizes a novel suction casting process, high temperature metallurgy composite process of the special alloy materials and the common matal materials can be realized by vacuum negative pressure casting method, thus special alloy bimetal composite delivery pipeline of wear resistance, corrosion resistance, and high temperature resistance matching different industries working conditionn can be obtained, the improved pipeline laminate structure has three layers. The EPS model is removed when casting, uncontrollable factors of the casting process can be reduced, and the performance of the wear resistant composite pipeline as well as service life can be improved.

Description

The compound conveyance conduit of a kind of negative pressure of vacuum casting special alloy bimetal

Technical field

The utility model relates to the pipe transportation technology field, relates in particular to the conveyance conduit of industry operating mode materials such as electric power, mine, building materials.

Background technique

The compound conveyance conduit of bimetal that generally is used at present industry operating mode materials such as electric power, mine, building materials, double-layer structure as shown in Figure 1, its pipeline outer-layer 1 is the Ordinary Steel material, wear-resistant composite bed 2 is high chromium alloy material.During casting, inner-walls of duct attaches the EPS model, and the inner wall cleaning operation is many, and the consumption of EPS cast material is many, and EPS model surface coating quality is difficult to control.Defectives such as the crackle that casting surface is prone to behind the negative pressure of vacuum cast abrasion-resistant alloy material, brittle failure have a strong impact on the ordinary production of quality of product and product applying unit.

The model utility content

The problem that the compound conveyance conduit structure of traditional bimetal to be solved in the utility model exists provides a kind of compound conveyance conduit of special alloy bimetal of negative pressure of vacuum casting, and the pipeline stratiform structure of having improved is three layers.Remove the EPS model during casting, reduce the uncontrollable factor in the casting process, improve the performance and the working life of abrasion resistant composite pipeline.

Its technological scheme is, a kind of compound conveyance conduit of special alloy bimetal of negative pressure of vacuum casting comprises: pipeline outer-layer, wear-resistant composite bed, the described wear-resistant composite bed internal surface pipeline internal layer of also having cast.The thickness of described pipeline internal layer is less than the thickness of described wear-resistant composite bed and described pipeline outer-layer.Wear-resistant composite bed is high chromium alloy material; Pipeline internal layer and pipeline outer-layer are the Ordinary Steel material.

Compared with prior art, the compound conveyance conduit of the utility model bimetal has following beneficial effect:

1. the compound conveyance conduit of bimetal of the three-decker of negative pressure of vacuum casting, surface quality of continuous castings is good, defectives such as flawless, brittle failure;

2. have and to satisfy superior wear-resistant, corrosion-resistant, the resistance to high temperature that different industrial operating modes are used.

Description of drawings

Fig. 1 is the compound conveyance conduit lateral cross section of an existing bimetal stratiform structure schematic representation;

Fig. 2 is the compound conveyance conduit lateral cross section of the special alloy bimetal stratiform structure schematic representation of the utility model negative pressure of vacuum casting.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described.

As shown in Figure 2, the compound conveyance conduit of special alloy bimetal of a kind of negative pressure of vacuum casting of the utility model, comprise: the pipeline outer-layer 1 of Ordinary Steel material, high chromium alloy material wear-resistant composite bed 2, and the pipeline internal layer 3 that casts in the Ordinary Steel material of wear-resistant composite bed 2 internal surface.The thickness of pipeline internal layer 3 is less than wear-resistant composite bed 2 and the thickness of pipeline outer-layer 1.

Its production process adopts no type to inhale the casting new process, by the negative pressure of vacuum casting method, realizes that the pyrometallurgy of special alloy material and ordinary metallic material is compound.The technical characterstic of its casting technique is:

A. the negative pressure of vacuum casting EPS model that discards tradition, pipeline (straight tube or bend pipe) wall is adopted outsourcing or interior bag plain edition, thin-walled steel plate method, under the negative pressure of vacuum condition, no type die cavity is realized suction casting special alloy material, thereby obtain the high performance double metal composite material of pyrometallurgy combination, composite material interface adhesive strength height, safe in utilization, good reliability;

B. novel technique is not only saved former EPS model raw material, auxiliary material, and casting and molding is quick, easy, and manufacturing efficiency improves greatly;

C. there are not defectives such as the crackle that is prone in the conventional composite casting, brittle failure in the inner-walls of duct composite material surface;

D. wear-resistant composite bed material adopts Gao Ge (Cr), nickel (Ni), vanadium (V), rare earth alloys such as (Re), has superior wear-resistant, corrosion-resistant, resistance to high temperature;

E. this patented technology is a metal alloy compositions shaping new method, will increase substantially the economic benefit and the social benefit of machining industry and material applicable industry.

Claims

1. the compound conveyance conduit of special alloy bimetal of negative pressure of vacuum casting, comprising: pipeline outer-layer (1), wear-resistant composite bed (2) is characterized in that: the internal surface of described wear-resistant composite bed (2) is pasted with the pipeline internal layer (3) of casting.

2. metal composite conveyance conduit according to claim 1 is characterized in that: the thickness of described pipeline internal layer (3) is less than the thickness of described wear-resistant composite bed (2) and described pipeline outer-layer (1).

3. metal composite conveyance conduit according to claim 1 and 2 is characterized in that: described pipeline internal layer (3) is the Ordinary Steel material.

4. metal composite conveyance conduit according to claim 1 and 2 is characterized in that: described wear-resistant composite bed (2) are high chromium alloy material.

5. metal composite conveyance conduit according to claim 1 and 2 is characterized in that: described pipeline outer-layer (1) is the Ordinary Steel material.