CN110893507A

CN110893507A - Explosive welding field and laying method thereof

Info

Publication number: CN110893507A
Application number: CN201911371293.3A
Authority: CN
Inventors: 张玉良; 张玉武
Original assignee: Hubei Yuhao Metal Composite Material Co Ltd
Current assignee: Hubei Yuhao Metal Composite Material Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-03-20
Anticipated expiration: 2039-12-26
Also published as: CN110893507B

Abstract

The invention provides a field for explosive welding and a laying method thereof, wherein laying raw materials of the field for explosive welding comprise stone chips and clay, and the amount of the clay is 1-80 wt% of the stone chips. When in laying, the laying raw materials are uniformly mixed, laid on the ground and then flattened. According to the invention, a certain proportion of clay is doped into the stone chips, so that the laying strength of an explosion welding field is effectively controlled, the deformation degree of a welding plate is controlled, the utilization efficiency of explosive impact force of the explosive is improved, and the using amount of the explosive is reduced.

Description

Explosive welding field and laying method thereof

Technical Field

The invention relates to the field of metal welding, in particular to a field for explosive welding and a laying method thereof.

Background

Explosive welding refers to a processing technology for welding two dissimilar metal plates together by using explosive explosion energy, and is also called explosive pressure welding. The general process is to carry out the explosive welding operation in outdoor open place, and explosive explosion produces the shock wave among the explosive welding operation process, and the shock wave impels the auxiliary material to strike the substrate at a high speed, and the auxiliary material is compounded with the substrate under the effect of high-speed impact force, and the interpenetration to reach the effect that two kinds of materials welded together. The auxiliary material is in the process of impacting the base material, the base material transmits impact force to the ground, and the ground supports the base material and bears the impact force to generate deformation.

At present, the common method is to directly lay stone chips on the ground of an explosion welding field, flatten the stone chips and lay a base material on the ground for explosion welding. But the stone chips are loose after being paved, the strength is low, the deformation of the base material is serious under the explosion impact, the working strength of subsequent leveling is high, the field strength is low, the elastic deformation is large, the impact force of explosive explosion is partially weakened, and the method is equivalent to the usage amount of extra explosive which is consumed more.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a field for explosive welding and a laying method thereof.

The invention provides a field for explosive welding, wherein paving raw materials comprise stone chips and clay, and the amount of the clay is 1-80 wt% of the stone chips.

Compared with conventional stone chips paved, the clay is mixed into the stone chips in a certain proportion, so that the field strength is increased, the deformation of the base material is reduced under the explosive impact, the loss of the impact force is reduced, and the field recovery speed is high after the explosive welding.

Further, the clay is soil with certain viscosity, including loess, sandy loam, black soil and the like, and preferably the loess.

Further, the paving raw material also comprises water, and the using amount of the water is 10-25 wt% of the clay. Proper water is supplemented in the mixture of the stone chips and the clay, so that the strength of the mixture can be increased, and the moisture content is controlled, so that fly ash on an explosive welding site can be effectively controlled.

Further, the laying thickness of the explosion welding field is 400-700 mm.

Furthermore, the explosion welding field is of a layered structure and has 2-3 layers in total. The laying is layered, one layer is firstly laid and flattened, then another layer is continuously laid and flattened, thus obtaining a 2-layer structure, and when the laying is 3 layers, another layer is laid and flattened.

Further, when the layer-by-layer laying is carried out, the ratio of stone chips to clay in the laying raw materials of each layer of the explosive welding field can be different. Design closely knit degree is different like this, then intensity is different to the shock attenuation effect is different. The proportion can be reasonably configured according to the plates with different thicknesses, so that the explosive welding quality is improved or the explosive consumption is correspondingly reduced.

In a preferred embodiment of the invention, the explosive welding field is divided into three layers, the laying thickness of the bottommost layer is 150-200 mm, and the clay accounts for 20-80 wt% of the stone chips; the laying thickness of the middle layer is 150-200 mm, wherein the clay accounts for 10-20 wt% of the stone chips; the laying thickness of the uppermost layer is 150-200 mm, and the clay consumption is 1-10 wt% of the stone chips.

The invention also provides a paving method of the explosion welding field, which comprises the steps of uniformly mixing the paving raw materials, paving the mixture on the ground and then flattening the mixture. When the field is of a laminated structure, the layered paving is adopted, wherein one layer is paved firstly and flattened, and then one layer is continuously paved and flattened, and so on.

In actual production, because the explosive welding is carried out outdoors, the weather influence is large, the proportion of the laying raw materials can be adjusted in time according to the weather condition, and the production is recovered rapidly.

According to the invention, a certain proportion of clay is doped into the stone chips, so that the laying strength of an explosion welding field is effectively controlled, the deformation degree of a welding plate is controlled, the utilization efficiency of explosive impact force of the explosive is improved, and the using amount of the explosive is reduced.

Detailed Description

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The examples do not show the specific techniques or conditions, according to the technical or conditions described in the literature in the field, or according to the product specifications. The reagents or instruments used are conventional products available from regular distributors, not indicated by the manufacturer.

Example 1

This example provides a field for explosive welding, the paving material is stone chips and loess, wherein the amount of loess used is 10 wt% of the stone chips. The thickness of laying of place in this embodiment is 600 mm.

The embodiment further provides a method for paving the site, which specifically includes:

the paving raw materials are uniformly mixed, paved on the ground and then flattened.

Example 2

This example provides a field for explosive welding, the paving material is stone chips and loess, wherein the amount of loess used is 10 wt% of the stone chips. In this embodiment, the field for explosive welding has a two-layer structure, and the thickness of each layer is 300 mm.

the paving raw materials are uniformly mixed, then layered paving is carried out, the lower layer is paved firstly and flattened, and then the upper layer is paved and flattened.

Example 3

This example provides a place for explosive welding, and the raw materials of laying are stone chip, loess and water, and wherein the amount of loess is 10 wt% of stone chip, and the amount of water is 15 wt% of loess. The thickness of the ground for explosion welding in this example was 600 mm.

Example 4

The embodiment provides a field for explosive welding, which is divided into three layers, wherein the laying raw materials of the bottommost layer are loess, stone chips and water, the loess accounts for 60 wt% of the stone chips, the water accounts for 15 wt% of the loess, and the laying thickness is 200 mm; the middle layer is paved with loess, stone chips and water, wherein the loess accounts for 20 wt% of the stone chips, the water accounts for 15 wt% of the loess, and the paving thickness is 200 mm; the uppermost layer is paved with loess, stone chips and water, wherein the loess accounts for 10 wt% of the stone chips, the water accounts for 15 wt% of the loess, and the paving thickness is 200 mm.

uniformly mixing the laying raw materials of the bottommost layer, laying on the ground, and flattening; uniformly mixing the laying raw materials of the middle layer, laying on the bottommost layer, and flattening; and finally, uniformly mixing the paving raw materials on the uppermost layer, paving on the middle layer, and flattening.

Comparative example 1

The comparative example provides a field for explosive welding, which is entirely formed by laying stone chips, and the laying thickness is 600 mm.

Comparative example 2

The comparative example provides a field for explosive welding, which is completely paved by loess, and the paving thickness is 600 mm.

Application example

The fields in examples 1-4 and comparative examples 1-2 were used for explosive welding, as follows:

preprocessing a base material with the thickness of 80mm, flatly placing the base material on a paved field, placing a coating material with the thickness of 15mm on the base material, leaving a gap between the base material and the coating material, paving an explosive on the surface of the coating material, and detonating the explosive for explosive welding.

Replacing the base material with the thickness of 20mm, 40mm, 100mm and 150mm respectively, and performing multiple times of explosive welding.

The following two tests were performed on the explosion-welded composite board, and the test results are shown in table 1.

A. And (3) surface quality detection: no damage, cracking, oxidation, warping, deformation and the like are observed;

B. tapping detection: and (4) tapping each position of the coating layer one by using a hammer, judging the bonding condition by sound, and estimating the bonding area rate.

TABLE 1 test results of the composite materials after explosive welding of each group

As can be seen from the above table, the field for explosive welding of the embodiment of the invention has appropriate strength, the deformation degree of the welding plate is effectively controlled, and the utilization efficiency of explosive impact force of the explosive is improved, so that the use amount of the explosive is reduced, and the welding quality of the obtained composite material is stable and reliable, and is superior to that of the comparative examples 1-2.

Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The field for explosive welding is characterized in that laying raw materials comprise stone chips and clay, and the amount of the clay is 1-80 wt% of the stone chips.

2. The explosive welding ground of claim 1, wherein said clay is loess, sandy loam or black soil.

3. The explosive welding site according to claim 1, wherein the paving material further comprises water in an amount of 10 to 25 wt% of the clay.

4. The field for explosion welding according to any one of claims 1 to 3, wherein a thickness of the field for explosion welding is 400 to 700 mm.

5. The field for explosive welding according to claim 4, wherein the field for explosive welding has a layered structure with 2-3 layers.

6. The field for explosive welding according to claim 5, wherein the ratio of stone chips to clay in the paving materials of each layer of the field for explosive welding is different.

7. The field for explosive welding according to claim 6, wherein the field for explosive welding is divided into three layers, the laying thickness of the bottommost layer is 150-200 mm, and the amount of clay is 20-80 wt% of the stone chips; the laying thickness of the middle layer is 150-200 mm, wherein the clay accounts for 10-20 wt% of the stone chips; the laying thickness of the uppermost layer is 150-200 mm, and the clay consumption is 1-10 wt% of the stone chips.

8. A method of laying a field for explosion welding according to any one of claims 1 to 3, including mixing the raw materials uniformly, laying on the ground and then flattening.