CN105179877A

CN105179877A - Pipeline with silicon carbide lining and forming technique of pipeline

Info

Publication number: CN105179877A
Application number: CN201510670552.8A
Authority: CN
Inventors: 陈磊; 田福昆; 陈银海
Original assignee: Spring Instrument Monitoring Program-Controlled Equipment Manufacturing Co Ltd On Suzhou
Current assignee: Spring Instrument Monitoring Program-Controlled Equipment Manufacturing Co Ltd On Suzhou
Priority date: 2015-10-13
Filing date: 2015-10-13
Publication date: 2015-12-23

Abstract

The invention discloses a pipeline with a silicon carbide lining and a forming technique of the pipeline and relates to the technical field of pipelines. The pipeline with the silicon carbide lining comprises a pipeline body and the silicon carbide lining. The silicon carbide lining is fixed to the inner wall of the pipeline body. The forming technique of the pipeline with the silicon carbide lining comprises the steps of manufacturing of a mandrel, assembly of the mandrel, pouring and curing and demolding. The silicon carbide lining is formed on the inner wall of the pipeline. According to the pipeline with the silicon carbide lining and the forming technique of the pipeline, the structure is stable and firm, falling is unlikely to occur, and the service life is long; in addition, a forming technique of the silicon carbide lining is simple, and the problem that the service life of a lining of a traditional pipeline is short can be solved.

Description

A kind of pipeline and moulding process thereof with silicon carbide lining

Technical field

The present invention relates to pipe technology field, particularly relate to a kind of pipeline and the moulding process thereof with silicon carbide wear-resistant liner.

Background technique

Along with modern science and technology scale high speed development, improve the conveying capacity of the industries such as electric power, metallurgy, coal, oil, chemical industry, building materials, machinery, thus increase the test of pipeline to medium transport ability.Because fed sheet of a media generally has flow velocity soon, the features such as flow is large, and in course of conveying, long-term continuing produces the effects such as impact, wearing and tearing, corrosion to tube wall, pipeline generation fatigue is caused and is gradually worn through.Generally have employed the abrasion-resistant cast steel material of thickening at heavy wear positions such as pipeline reducing diameter, threeway, bend pipes but be just worn at 2-3 month, pipeline just must carry out repairing or changing, have a strong impact on the efficiency of producing, increase the input of production cost and manpower.

For solving abrasion of conveying pipes problem, the past adopts segmentation cutting to conveyance conduit easy to wear, pasting wear resistant ceramic chip, the abrasionproof way of then butt welding recovery.But because the effective storage life of ceramic paster tackiness agent is limited, once adhesive failure, ceramic paster comes off in a large number, causes conveyance conduit Fast Wearing, adds the workload of potential safety hazard and maintenance to power plant.

Summary of the invention

The object of the invention is to propose a kind of pipeline with silicon carbide lining, there is excellent wear resistance.Structural stability is firm, difficult drop-off, inefficacy, and working life extends.

Another object of the present invention is to propose a kind of moulding process with the pipeline of silicon carbide lining, and technique is simple, shaping silicon carbide lining firmly, difficult drop-off and inefficacy, working life extends.

For reaching this object, the present invention by the following technical solutions:

Have a pipeline for silicon carbide lining, described pipeline comprises pipeline body and silicon carbide lining, and described silicon carbide lining is fixed on the inwall of described pipeline body.

Further technological scheme, the thickness of described silicon carbide lining is 2.0-5.0cm.

There is a moulding process for the pipeline of silicon carbide lining, comprise the following steps,

Step one, makes core according to pipeline body;

Step 2, is fixed on described core in described pipeline body, forms space between described core and pipeline body;

Step 3, cast: the mixture pouring into a mould silicon carbide castable and water in described space;

Step 4, through overcuring, forms silicon carbide lining in described pipeline body, then carries out the demoulding.

Further technological scheme, is fixed by fixture block between the described core in described step 2 and described pipeline body.

Further technological scheme, the material of described fixture block is silicon carbide.

Further technological scheme, in described step 3, the mass ratio of silicon carbide castable and water is 100:6.2 ~ 100:5.5.

Further technological scheme, carries out pump-down process after the cast in described step 3.

Further technological scheme, in described step 4, after the demoulding completes, to liner carry out air-dry, repair burr or spray paint.

Further technological scheme, the environmental conditions of described solidification is normal temperature and pressure, and curing time is two days.

Beneficial effect of the present invention:

A kind of pipeline with silicon carbide lining that the present invention proposes, pipeline body inwall is fixed with silicon carbide lining, and silicon carbide lining has good corrosion resistance and abrasion resistance, and sound construction, difficult drop-off lost efficacy, and working life extends, and was wear-resisting 2-3 times of watering steel pipeline.

A kind of moulding process with the pipeline of silicon carbide lining that the present invention proposes, by silicon carbide castable and water mixing are poured in the space of pipeline body and core formation, be cured, namely the demoulding form the pipeline with silicon carbide lining, technique is simple, can be formed between silicon carbide lining with pipeline body and firmly be combined, difficult drop-off, inefficacy, the working life of pipeline extends, and is wear-resisting 2-3 times of watering the working life of steel pipeline in prior art.

Accompanying drawing explanation

Fig. 1 is the structural representation with the pipeline of silicon carbide lining provided by the invention;

Fig. 2 is the structural representation of pipeline body provided by the invention and core assembling.

Wherein, 1, pipeline body; 2, silicon carbide lining; 3, the coat of paint; 4, core; 5, fixture block; 6, space.

Embodiment

Technological scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.

Embodiment 1

As shown in Figure 1, a kind of pipeline with silicon carbide lining, pipeline comprises pipeline body 1 and silicon carbide lining 2, and silicon carbide lining 2 is fixed on the inwall of pipeline body 1.

The thickness of silicon carbide lining 2 is 2.0-5.0cm, and thickness is moderate, has good corrosion resistance, good forming effect, but is not limited thereto thickness range.

As shown in Figure 1, pipeline also comprises the coat of paint 3, the coat of paint 3, on the surface of silicon carbide lining 2 away from pipeline body 1 inwall, can be protected pipeline and silicon carbide lining 2 further, can also reduce the flow resistance of pipeline internal medium.

Embodiment 2

The present embodiment is substantially identical with the structure with the pipeline of silicon carbide lining of embodiment 1, and pipeline comprises pipeline body 1 and silicon carbide lining 2, and silicon carbide lining 2 is fixed on the inwall of pipeline body 1.

Difference is, the type of pipeline, shape, size are not limit, and the thickness of silicon carbide lining 2 is not limit, and have good wear resistance, difficult drop-off lost efficacy.

Embodiment 3

Step one, makes core 4 according to pipeline body 1;

Step 2, is fixed on core 4 in pipeline body 1, is fixed, as shown in Figure 2, forms space 6 between core 4 and pipeline body 1, for cast between core 4 and pipeline body 1 by fixture block 5;

Step 3, cast: the mixture pouring into a mould silicon carbide castable and water in space 6, wherein, the mass ratio of silicon carbide castable and water is preferably 100:6.2 ~ 100:5.5, the performance of the silicon carbide lining 2 formed afterwards is good, difficult drop-off, corrosion resistance and flushing resistance good;

Step 4, through overcuring, forms silicon carbide lining 2 in pipeline body 1, wherein, the environmental conditions of solidification is normal temperature and pressure, and curing time is two days, then carries out the demoulding, after the demoulding completes, to liner carry out air-dry, repair burr or spray paint, make pipeline more perfect, be convenient to application.

Preferably, the material of fixture block 5 is silicon carbide, and through cast, solidification, fixture block 5 is fixed in silicon carbide lining 2, and form one with silicon carbide lining 2, even structure, in order to avoid fixture block 5 place of silicon carbide lining 2 is not corrosion-resistant.

Carry out pump-down process after cast in step 3, pump-down process is exhausted by shake unit, can also select other exhaust modes, makes silicon carbide lining 2 close structure, and discharge oxygen, decay resistance is better.

Obviously, the above embodiment of the present invention is only to clearly demonstrate example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.

Claims

1. one kind has the pipeline of silicon carbide lining, it is characterized in that, described pipeline comprises pipeline body (1) and silicon carbide lining (2), and described silicon carbide lining (2) is fixed on the inwall of described pipeline body (1).

2. have the pipeline of silicon carbide lining according to claim 1, it is characterized in that, the thickness of described silicon carbide lining (2) is 2.0-5.0cm.

3. there is a moulding process for the pipeline of silicon carbide lining, it is characterized in that, comprise the following steps,

Step one, makes core (4) according to pipeline body (1);

Step 2, is fixed on described core (4) in described pipeline body (1), forms space (6) between described core (4) and pipeline body (1);

Step 3, cast: the mixture of cast silicon carbide castable and water in described space (6);

Step 4, through overcuring, forms silicon carbide lining (2) in described pipeline body (1), then carries out the demoulding.

4. the moulding process with the pipeline of silicon carbide lining according to claim 3, is characterized in that, the described core (4) in described step 2 and between described pipeline body (1) by fixture block (5) fix.

5. the moulding process with the pipeline of silicon carbide lining according to claim 4, is characterized in that, the material of described fixture block (5) is silicon carbide.

6. the moulding process with the pipeline of silicon carbide lining according to claim 3, is characterized in that, in described step 3, the mass ratio of silicon carbide castable and water is 100:6.2 ~ 100:5.5.

7. the moulding process with the pipeline of silicon carbide lining according to claim 3, is characterized in that, carries out pump-down process after the cast in described step 3.

8. the moulding process with the pipeline of silicon carbide lining according to claim 1, is characterized in that, in described step 4, after the demoulding completes, to liner carry out air-dry, repair burr or spray paint.

9. the moulding process with the pipeline of silicon carbide lining according to claim 1, is characterized in that, the environmental conditions of described solidification is normal temperature and pressure, and curing time is two days.