CN103900924A - Erosion test fixing device with curvature adjustable heterogeneous cooperative erosion-resisting wear-resisting structure - Google Patents

Abstract

The invention discloses a fixing device for an erosion test of an adjustable curvature heterogeneous synergistic erosion and wear resistance structure. There are holes with the same diameter as the bolt thread, two holes on each side, scales on both sides of the base, closed grooves on the scales, track grooves on both sides of the base; transparent closed grooves on the sides of the cuboid in the middle of the slider, The bolts pass through the transparent closed groove and are screwed into the holes, and the sides of the cuboid on both sides of the slider are provided with threaded holes for matching with the screws; The two ends of the adjustable heterogeneous synergistic erosion and wear resistance structure are respectively fixed with the slider by bolts, and the curvature adjustable heterogeneity synergy erosion and wear resistance structure is in a bent state. The invention overcomes the limitation that the curvature of the sample in the existing erosion wear test cannot be adjusted, and cooperates with the adjustable fixing device and the erosion wear test under specific conditions to obtain the influence of the curvature of the sample on its erosion wear rate .

Description

Curvature adjustable heterogeneous synergistic erosion and wear resistance structure erosion test fixture

technical field

The invention relates to the field of test instruments, in particular to a fixture for erosion and wear test samples, in particular to a fixture for erosion tests with adjustable curvature heterogeneous synergistic erosion and wear resistance structures.

Background technique

Erosion wear generally exists in important industrial fields such as steel, power generation, cement, petrochemical and military industry, accounting for about 8% of the total wear failure of industrial production. Domestic and foreign engineers and technicians mainly start from the material point of view to improve the erosion resistance of the material surface, including research and development of new materials, material surface modification, material surface strengthening treatment, etc., but the technical process of the above methods is complicated and the erosion resistance The wear-enhancing effect is limited. From the structural point of view, the method of improving the erosion wear resistance of materials is only limited to processing specific structures on the plane, and lacks the erosion wear resistance for the curvature adjustable heterogeneous synergistic erosion wear resistance structure described in the present invention experimental research. At present, the fixing devices for the erosion test at home and abroad include bolt fixing, hydraulic locking and fixing, etc., and the above-mentioned test sample fixing devices cannot meet the requirements of the erosion test sample fixing described in the present invention. In order to avoid the limitations of traditional technical means, it is of great significance to explore its erosion and wear resistance from the perspective of changing the overall structure of the material, and to provide a device for adjusting and fixing the curvature of the sample for the erosion and wear test.

Contents of the invention

The purpose of the present invention is to provide a fixing device for the erosion test of the adjustable curvature heterogeneous synergistic erosion and wear resistance structure. It can cooperate with the erosion wear testing machine to carry out the erosion wear test.

The invention is composed of a slider, a base, a bolt and a screw, and the two sides of the adjustable curvature heterogeneous cooperative erosion-resistant structure have holes with the same diameter as the bolt thread, two holes on each side, and scales on both sides of the base , the scale is provided with closed grooves, and the two sides of the base are provided with track grooves; the sides of the cuboid in the middle of the slider are provided with transparent closed grooves, the bolts pass through the transparent closed grooves and are screwed into the holes, and the sides of the cuboids on both sides of the slider are provided with There are threaded holes matching with the screws; the two sliders are respectively located in the track grooves on both sides of the base and fixed with the base with screws, and the two ends of the adjustable curvature heterogeneous collaborative erosion-resistant and wear-resistant structure are respectively fixed with the sliders with bolts , the curvature-tunable heterogeneous synergistic erosion-resistant wear-resistant structure is in a curved state.

The curvature-adjustable heterogeneous synergistic erosion-resistant and wear-resistant structure is composed of two heterogeneous materials. The base material at the bottom layer is solid silica gel cured by RTV-2 silicone rubber and curing agent, and the upper layer material is

AL6061 alloy hard unit, several hard units are connected with the base material with superglue.

The ruler records the distance m between the two sides of the adjustable curvature heterogeneous synergistic erosion-resistant wear structure, and the arc length l outside the cross-section of the adjustable curvature heterogeneous synergistic erosion-resistant wear structure is obtained by measuring with a tape measure. The value of the above m It represents the chord length corresponding to the outer enclosure, and then according to the relationship between the curvature ρ of the sample and the arc length l and chord length m The curvature of the adjustable curvature heterogeneous synergistic erosion and wear resistant structure 1 is obtained. Then extrapolate to the curvature of this structure.

The working process and principle of the present invention are as follows: first, fix a slider and the base with screws, then fix one end of the curvature-adjustable heterogeneous synergistic erosion-resistant wear structure with the slider, and then fix the curvature-adjustable heterogeneous synergistic erosion The erosion-wear structure is bent to a certain degree, and then it is fixed with another slider with bolts, and finally the slider is fixed with the base with screws, and the curvature-adjustable heterogeneous cooperative erosion-resistant structure shown on the scale is recorded on both sides The distance between them is then deduced to reveal the curvature of the structure. The specific push to the relationship is:

$\mathrm{<span\; class="notranslate">\; \&rho;</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; r</span>}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}{\mathrm{<span\; class="notranslate">\; l</span>}}$

$\mathrm{<span\; class="notranslate">\; m</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}\mathrm{<span\; class="notranslate">\; sin</span>}\frac{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}$

Combining the above two formulas, we can get,

$\mathrm{<span\; class="notranslate">\; \&rho;</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; arccos</span>}\frac{\mathrm{<span\; class="notranslate">\; m</span>}}{\mathrm{<span\; class="notranslate">\; l</span>}}}{\mathrm{<span\; class="notranslate">\; l</span>}}$

In the above formula, m is the indication of the scale, and l is the outer arc length of the cross-section of the adjustable curvature heterogeneous synergistic erosion and wear-resistant structure. The curvature of the sample is thus obtained, and after the erosion test is carried out, the relationship between the curvature and the erosion wear rate is obtained.

Beneficial effects of the present invention:

The invention overcomes the limitation that the curvature of the existing erosion wear test specimens cannot be adjusted. From the perspective of the adjustable curvature heterogeneous synergistic structure, the adjustable fixing device and the erosion wear test under specific conditions can be obtained. Effect of specimen curvature on its erosion wear rate.

Description of drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a three-dimensional schematic diagram of the adjustable curvature heterogeneous synergistic erosion and wear resistance structure of the present invention.

Fig. 3 is a three-dimensional schematic view of the base of the present invention.

Fig. 4 is a three-dimensional schematic view of the slider of the present invention.

Fig. 5 is a schematic diagram of the principle of calculating the curvature adjustable heterogeneous synergistic erosion and wear resistance structure.

Detailed ways

As shown in Figure 1, the present invention is composed of a slider 2, a base 3, a bolt 4 and a screw 5, and as shown in Figure 2, the curvature-adjustable heterogeneous cooperative erosion-resistant wear structure 1 is composed of two heterogeneous materials, The base material A on the bottom layer is solid silica gel cured by RTV-2 silicone rubber and curing agent, the upper material B is AL6061 alloy hard unit, and several hard units are connected with the base material with super glue; Both sides of the erosion-resistant and wear-resistant structure 1 are provided with holes C having the same thread diameter as the bolt 4, and there are two holes C on each side. As shown in Figure 3 , there are scales 6 on both sides of the base 3 , the scale 6 is provided with closed grooves 7 , and both sides of the base 2 are provided with track grooves 8 .

As shown in Figure 4, a transparent closed groove 9 is provided on the side of the cuboid in the middle of the slider 2, and the bolt 4 passes through the transparent closed groove 9 and is screwed into the hole C. The threaded hole 11 matched with the screw 5; the two sliders 2 are respectively located in the track grooves 8 on both sides of the base 2 and fixed with the base 3 with the screw 5, and the two ends of the adjustable heterogeneous synergistic erosion-resistant wear-resistant structure 1 are respectively connected with the The slider 2 is fixed with bolts 4, and the curvature-adjustable heterogeneous synergistic erosion-resistant and wear-resistant structure 1 is in a curved state.

求得曲率可调异质协同耐冲蚀磨损结构1的曲率。再推到出此结构的曲率。Scale 6 records the distance m between the two sides of the curvature-adjustable heterogeneous synergistic erosion-resistant wear-resistant structure. As shown in Figure 5, the outside of the cross-section of the adjustable curvature heterogeneous synergistic erosion-resistant and wear-resistant structure 1 is the arc length l measured with a tape measure. The relationship between sample curvature ρ and arc length l and chord length m

The curvature of the adjustable curvature heterogeneous synergistic erosion and wear resistant structure 1 is obtained. Then extrapolate to the curvature of this structure.

The working process and principle of this embodiment:

First, a slider 2 and the base 3 are fixed with screws 5, and then one end of the curvature-adjustable heterogeneous cooperative erosion-resistant wear structure 1 is fixed with the slider 2 with bolts 4, and the curvature-adjustable heterogeneous synergistic erosion-resistant The wear structure 1 is bent to a certain extent, and then it is fixed with another slider 2 with bolt 4, and finally the slider 2 is fixed with the base 3 with screw 5, and the curvature-adjustable heterogeneous synergy resistance shown by scale 6 is recorded. The distance m between the two sides of the erosion wear structure.

求得曲率可调异质协同耐冲蚀磨损结构1的曲率。As shown in Figure 5, the outer cross-section of the adjustable curvature heterogeneous synergistic erosion-resistant wear-resistant structure 1 is the arc length l measured with a tape measure. The above m value represents the chord length corresponding to the outer arc, and then according to the The relationship between curvature ρ and arc length l and chord length m

The curvature of the adjustable curvature heterogeneous synergistic erosion and wear resistant structure 1 is obtained.

In the above formula, m is the scale indication, l is the outer arc length of the cross-section of the heterogeneous synergistic erosion-resistant wear-resistant structure with adjustable curvature, r is the radius of the circle O corresponding to the outer arc length l, and θ is the outer arc length l The distance between radians and EF is the chord length m corresponding to the outer arc length, that is, the scale indication. The curvature of the sample is thus obtained, and after the erosion test is carried out, the relationship between the curvature and the erosion wear rate is obtained.

Claims (2)

1. An erosion test fixture with an adjustable curvature heterogeneous synergistic erosion and wear resistance structure is characterized in that: it is composed of a slider, a base, a bolt and a screw, and the curvature is adjustable. There are holes with the same diameter as the bolt thread on the side, two holes on each side, scales on both sides of the base, closed grooves on the scales, track grooves on both sides of the base; transparent seals on the side of the cuboid in the middle of the slider The bolts pass through the transparent closed groove and are screwed into the holes, and the sides of the cuboid on both sides of the slider are provided with threaded holes for the screws; the two sliders are respectively located in the track grooves on both sides of the base and fixed with the base by screws , the two ends of the curvature-adjustable heterogeneous synergistic erosion-wear-resistant structure are respectively fixed to the slider with bolts, and the curvature-adjustable heterogeneous synergistic erosion-resistant wear-resistant structure is in a bent state. 2. The erosion test fixture of adjustable curvature heterogeneous synergistic erosion and wear resistance structure according to claim 1, characterized in that: the adjustable curvature heterogeneity synergy erosion and wear resistance structure is composed of two Consisting of heterogeneous materials, the base material at the bottom is solid silica gel cured by RTV-2 silicone rubber and curing agent, the upper material is AL6061 alloy hard unit, and several hard units are connected to the base material with superglue.

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