CN216559936U - Preparation mould of propellant-lining interfacial adhesion peeling test sample - Google Patents
Preparation mould of propellant-lining interfacial adhesion peeling test sample Download PDFInfo
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- CN216559936U CN216559936U CN202122999185.XU CN202122999185U CN216559936U CN 216559936 U CN216559936 U CN 216559936U CN 202122999185 U CN202122999185 U CN 202122999185U CN 216559936 U CN216559936 U CN 216559936U
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Abstract
The utility model relates to a manufacturing mold for a propellant-lining interface bonding and stripping test sample, which comprises a mold main body and a base, wherein the mold main body and the base are buckled with each other; the mould main body is provided with a straight cylindrical cavity extending inwards from an opening of the mould main body, and the peripheral wall of the straight cylindrical cavity is provided with a plurality of grooves which extend in a direction vertical to the peripheral wall and have rectangular sections. The utility model does not need to carry out the operation of cutting the heat insulation layer, the lining and the propellant in the process of manufacturing the test sample, thereby achieving the purposes of eliminating the safety risk existing in the cutting of the test sample and improving the preparation efficiency of the test sample.
Description
Technical Field
The utility model relates to the technical field of manufacturing molds of samples for testing interface bonding and stripping performance, in particular to a manufacturing mold of a propellant-lining interface bonding and stripping test sample.
Background
The solid rocket engine comprises a shell, an insulating layer, a lining, a propellant, a nozzle, an igniter and the like, wherein the lining is positioned between the insulating layer and the propellant and has the function of ensuring the reliability of the adhesion of the propellant and the insulating layer or the shell.
The liner/propellant bonding peel strength is the capability of representing the linear stress bearing effect of a liner and propellant bonding interface, and the peel strength is divided into 90-degree peel strength and 180-degree peel strength according to different peel angles. The prior art preparation of propellant/liner/insulation bond peel test specimens typically involves the following procedure: thermal insulation sheet making, lining coating, propellant casting, de-molding, shaping and testing. The process is as follows: preparing a heat-insulating sheet, coating a lining layer with certain mass according to the designed thickness, filling the heat-insulating sheet into a special charging mould, and then pouring a propellant; demolding after the propellant is completely cured to obtain propellant blocks with a heat insulating layer and a lining layer in a certain size, and cutting the propellant blocks into independent samples according to the size required by the test standard; bonding the sample with a test fixture to form a to-be-tested stripping sample; the peel specimens were loaded on the equipment test for performance testing. According to the clamping angle between the sample and the test equipment, the peeling performance test of 0-180 degrees can be realized.
The utility model discloses a utility model patent application number ZL 210922002311.2-a propellant and lining interface bonding peel test are with anchor clamps, it discloses a test lining and propellant 90 bonding peel performance are with anchor clamps to use. The manufacturing of the heat insulating sheet, the coating of the lining layer and the pouring of the propellant are the same as the procedures, the demolded sample to be tested only needs to be cut into the heat insulating sheet according to a certain size, then the whole propellant medicine block is loaded into a special test fixture, and the test piece to be tested can be switched by sliding the sample to be tested left and right in the test fixture. The test sample can be used for testing for many times without cutting a propellant and assembling one test sample, so that the safety risk of sample shaping is reduced, and the test efficiency is improved. However, the use of this jig still requires the operator to cut the insulation layer, and in order to ensure that the insulation layer is completely cut, the propellant is inevitably cut, thus presenting a certain safety risk and being inefficient.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide a manufacturing mold for a propellant-lining interface bonding and stripping test sample without cutting a propellant, a lining and a heat insulating layer.
The utility model is realized by the following technical scheme:
a manufacturing mold for a propellant-lining interface bonding and stripping test sample comprises a mold main body and a base which are mutually buckled; the mould main body is provided with a straight cylindrical cavity extending inwards from an opening of the mould main body, and the peripheral wall of the straight cylindrical cavity is provided with a plurality of grooves which extend in a direction vertical to the peripheral wall and have rectangular sections.
Further, the length of the groove is the same as that of the straight cylindrical cavity.
Further, the mold for manufacturing the propellant-liner interfacial adhesion peeling test sample is characterized in that the base is provided with a plurality of grooves corresponding to the grooves of the mold main body.
Further, the section of the groove is the same as that of the groove.
Further, the mold for manufacturing the propellant-lining interface bonding and peeling test sample has the advantages that the width of the groove is larger than that of the heat insulation test piece, and the depth of the groove is larger than the thickness of the heat insulation test piece.
Furthermore, the mould for manufacturing the propellant-lining interface bonding and stripping test sample has the advantages that the length of the straight cylindrical cavity is greater than the sum of the length of the heat insulation test piece and the pouring boiling height of the propellant.
The utility model has the advantages and effects that:
the utility model provides a manufacturing die for a propellant-lining interface bonding stripping test sample, which does not need to carry out the operation of cutting a heat insulation layer, a lining and a propellant in the process of manufacturing the sample, and achieves the purposes of eliminating the safety risk existing in the cutting of the test sample and improving the preparation efficiency of the test sample.
Drawings
FIG. 1 shows a schematic cross-sectional view of a mold body for making a mold provided by the present invention;
FIG. 2 shows a schematic view of a base for making a mold provided by the present invention;
fig. 3 shows a schematic cross-sectional view of a test specimen to be tested after demolding.
Description of reference numerals: 1-main body of mould, 11-straight cylindrical cavity, 12-groove, 2-base, 21-groove, 3-heat-insulating sheet, 4-lining and 5-propellant.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some, but not all embodiments of the utility model. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention are described in detail below with reference to the accompanying drawings:
in the description of the present invention, it is to be understood that, unless otherwise specified, "a plurality" means two or more; the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and are therefore not to be construed as limiting the scope of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
The utility model provides a manufacturing mold for a propellant-lining interface bonding and stripping test sample, which comprises a mold main body 1 and a base 2 which can be mutually buckled, and the mold main body and the base can be inwards poured to manufacture the test sample after being buckled.
Fig. 1 shows a schematic cross-sectional view of a mold body for making a mold according to the present invention. The mold body 1 has a straight cylindrical cavity 11 extending inwardly from its opening, and the straight cylindrical cavity 11 may be, but is not limited to, a cylinder or a polygonal prism, i.e., the cross section of the straight cylindrical cavity 11 may be, but is not limited to, a circle or a regular polygon. The peripheral wall of the straight cylindrical cavity 11 has a plurality of grooves 12 with rectangular cross sections extending outwards perpendicular to the peripheral wall. Specifically, one surface of the groove 12 coincides with a part of the peripheral wall of the straight cylindrical cavity 11, that is, the groove 12 and the straight cylindrical cavity 11 are communicated through the surface. The length of the groove 12 is the same as that of the straight cylindrical cavity 11, and the central axes thereof are preferably parallel. In one embodiment, the width W of the slot 121(e.g., 25.9mm to 26.1mm) slightly larger than the width w of the heat-insulating test piece 33(e.g., 25. + -. 0.5mm), depth D of groove 121(e.g., 3.5mm to 3.6mm) slightly larger than the thickness d of the heat-insulating test piece 33(for example, 2.5mm to 3.0 mm). The length of the straight cylindrical cavity 11 (for example, 160mm) is greater than the sum of the length of the heat-insulating test piece (for example, 115mm to 125mm) and the propellant pouring boiling height (for example, about 30 mm).
Fig. 2 shows a schematic diagram of a base for making a mold according to the present invention. The base 2 has several recesses 21 corresponding to the several grooves 12 of the mould body 1. In particular, the cross-section of the groove 21 is the same as the cross-section of the groove 12. A plurality ofThe position of the recesses 21 on the base 2 corresponds to the position of the grooves 12 on the mould body 1. The groove 21 may be long W2(25.9 mm-26.1 mm) and width D2(3.5 mm-3.6 mm) rectangular groove.
The process of using the manufacturing mold to manufacture the test sample comprises the following steps:
when the test sample is manufactured, a plurality of heat insulation test pieces with proper sizes are prepared, the lining layer is coated on the heat insulation test pieces, after the lining layer is semi-solidified, the heat insulation test pieces are respectively arranged in a plurality of grooves 12 at the edge of the die main body 1, a little heat insulation test pieces are reserved at one end of the base, and the length of the reserved heat insulation test pieces is smaller than the depth of the groove 21 of the base 2. The groove of the base 2 is aligned with the remaining heat-insulating test piece and then assembled with the mold body 1. The propellant was poured into the assembled production mold and allowed to cure, after which the test specimens shown in FIG. 3 were obtained.
The test sample obtained by using the manufacturing die provided by the utility model can be directly used for testing the bonding and stripping performance of 0-180 degrees, and the manufacturing efficiency and safety of the test sample are obviously improved.
The above examples are only for illustrating the technical solutions of the present invention, and are not intended to limit the scope of the present invention. But all equivalent changes and modifications within the scope of the present invention should be considered as falling within the scope of the present invention.
Claims (6)
1. A mould for manufacturing a propellant-lining interface bonding and stripping test sample is characterized by comprising a mould main body (1) and a base (2) which are mutually buckled; the mould main body (1) is provided with a straight cylindrical cavity (11) extending inwards from an opening of the mould main body, and the peripheral wall of the straight cylindrical cavity (11) is provided with a plurality of grooves (12) which extend perpendicular to the direction of the peripheral wall and have rectangular sections.
2. Mould for making propellant-liner interfacial adhesion peel test specimens, according to claim 1, characterized in that the length of the groove (12) is the same as the length of the straight cylindrical cavity (11).
3. Mould for the production of a propellant-liner interfacial adhesion peel test specimen according to claim 1 or 2, characterized in that said base (2) has grooves (21) corresponding to said grooves (12) of said mould body (1).
4. Mould for making propellant-liner interfacial adhesion peel test specimens, according to claim 3, characterized in that the cross section of the grooves (21) is identical to the cross section of the grooves (12).
5. The mold for making a propellant-liner interfacial adhesion peel test specimen according to claim 1 or 2, wherein the width of the groove (12) is larger than the width of the insulating test piece, and the depth of the groove (12) is larger than the thickness of the insulating test piece.
6. The mold for producing a propellant-liner interfacial adhesion peel test specimen according to claim 5, wherein the length of the straight cylindrical cavity (11) is greater than the sum of the length of the heat insulation test piece and the propellant pouring boiling height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122999185.XU CN216559936U (en) | 2021-12-01 | 2021-12-01 | Preparation mould of propellant-lining interfacial adhesion peeling test sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122999185.XU CN216559936U (en) | 2021-12-01 | 2021-12-01 | Preparation mould of propellant-lining interfacial adhesion peeling test sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216559936U true CN216559936U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122999185.XU Active CN216559936U (en) | 2021-12-01 | 2021-12-01 | Preparation mould of propellant-lining interfacial adhesion peeling test sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216559936U (en) |
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2021
- 2021-12-01 CN CN202122999185.XU patent/CN216559936U/en active Active
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