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CN-121656327-B - Quick testing arrangement of aluminium oxide ceramic substrate thermal conductivity

CN121656327BCN 121656327 BCN121656327 BCN 121656327BCN-121656327-B

Abstract

The invention relates to the technical field of ceramic substrate testing devices, in particular to a rapid testing device for thermal conductivity of an alumina ceramic substrate, which comprises a testing machine body, a feeding component, a placement conveying component, a pretreatment component and a thermal conductivity testing device, wherein the feeding component, the placement conveying component, the pretreatment component and the thermal conductivity testing device are arranged outside the testing machine body, the pretreatment component comprises a spraying part and a drying part, the feeding component comprises a storage frame and a feeding cylinder, the placement conveying component comprises a servo motor and a placing frame, the spraying part comprises a spraying bin, the drying part comprises a drying bin, the ceramic substrate can be automatically conveyed to the placing frame in the machine body in a periodical rotation mode through the feeding component, and the spraying part, the drying part and the checking part in the testing machine body are matched, so that the surface of the ceramic substrate can be sprayed, a sprayed modified layer can be rapidly dried, the light transmittance of the modified layer can be automatically detected in the drying process, and the thermal conductivity testing efficiency of the ceramic substrate is improved.

Inventors

  • CHEN KEMING
  • CHEN KELIANG

Assignees

  • 湖南省新煜田新材料有限公司

Dates

Publication Date
20260508
Application Date
20260209

Claims (8)

  1. 1. A rapid testing device for the thermal conductivity of an alumina ceramic substrate is characterized by comprising, Test machine body (1) A feeding component (2) arranged outside the testing machine body (1), a placing and conveying component (3) arranged inside the testing machine body (1), a pretreatment component (4) arranged outside the placing and conveying component (3) and a thermal conductivity testing device (5) arranged inside the testing machine body (1), The pretreatment component (4) comprises a spraying piece (41) and a drying piece (42) which are arranged in the test machine body (1), The feeding component (2) comprises a storage frame (24) arranged outside the test machine body (1), a feeding cylinder (22) for feeding is arranged outside the storage frame (24), and The placement and conveying assembly (3) comprises a servo motor (31) arranged in the test machine body (1), a placement frame (32) is arranged at the end part of the servo motor (31), and The spraying part (41) comprises a spraying bin (414) arranged outside the placing frame (32), and The drying piece (42) comprises a drying bin (421) arranged outside the placing frame (32), a plurality of far infrared heaters (422) are arranged inside the drying bin (421), a checking piece (43) is also arranged outside the placing frame (32), wherein, The check member (43) comprises a second bottom plate (431) arranged outside the placing frame (32), the second bottom plate (431) corresponds to the drying bin (421), the second bottom plate (431) is provided with a penetrating lens (432), a darkroom (433) is arranged outside the lens (432), a visual detection camera (434) is arranged inside the darkroom (433), The placing frame (32) rotates to enable the ceramic substrate to sequentially pass through the spraying bin (414) and the drying bin (421) to be sprayed with the modified layer, and after the modified layer is dried, the ceramic substrate is rotated to the thermal conductivity testing device (5) for testing.
  2. 2. The rapid testing device for the thermal conductivity of the alumina ceramic substrate according to claim 1, wherein the feeding assembly (2) further comprises a feeding table (21) arranged outside the testing machine body (1), the storage frame (24) is arranged outside the feeding table (21), the stacking groove (25) is formed in the outer portion of the storage frame (24), a pushing plate (23) extending into the storage frame (24) is arranged at the end portion of the feeding cylinder (22), and a feeding port (26) corresponding to the pushing plate (23) is formed in the outer portion of the testing machine body (1).
  3. 3. The rapid test device for the thermal conductivity of the alumina ceramic substrate according to claim 2, wherein a placing groove (321) is formed in the outside of the placing frame (32), an opening penetrating through the placing groove (321) is formed in the bottom surface of the placing groove, one side of the placing frame (32) corresponds to the feeding hole (26), and the other side of the placing frame (32) corresponds to the thermal conductivity test device (5).
  4. 4. A rapid test device for the thermal conductivity of an alumina ceramic substrate according to claim 3, wherein the spraying piece (41) comprises a paint bin (411) arranged inside a test machine body (1), a feed pipe (412) is arranged outside the paint bin (411), a conveying pipe (413) is arranged outside the paint bin (411), a first bottom plate (415) is arranged outside the placing frame (32), and a paint spray head (416) positioned inside the first bottom plate (415) and the spraying bin (414) is arranged at the end part of the conveying pipe (413).
  5. 5. The rapid thermal conductivity testing apparatus of aluminum oxide ceramic substrate according to claim 4, wherein a recovery cover (417) is further arranged outside the spraying bin (414) for sucking the coating material dissipated during treatment, and a connecting pipe (418) extending to the outside of the testing machine body (1) is arranged outside the recovery cover (417).
  6. 6. The rapid test device for the thermal conductivity of the alumina ceramic substrate according to claim 3, wherein the thermal conductivity test device (5) comprises a test table (51), a pushing cylinder (33) is arranged outside the placing frame (32), a pushing table (331) which moves along the placing groove (321) is arranged at the end part of the pushing cylinder (33), and the pushing table (331) pushes the ceramic substrate to move from the inside of the placing groove (321) to the test table (51).
  7. 7. The rapid test device for thermal conductivity of an alumina ceramic substrate according to claim 6, wherein a telescopic groove (324) is formed in the placing groove (321), a movable baffle plate (322) is movably arranged in the telescopic groove (324), a spring (323) is arranged in the telescopic groove (324), and the end part of the movable baffle plate (322) is subjected to round corner treatment.
  8. 8. The rapid test device for the thermal conductivity of the alumina ceramic substrate according to claim 7, wherein a test frame plate (52) is movably arranged outside the test table (51), the test frame plate (52) is provided with a penetrating opening, and a magnetic attraction plate (53) is arranged outside the test frame plate (52).

Description

Quick testing arrangement of aluminium oxide ceramic substrate thermal conductivity Technical Field The invention relates to the technical field of ceramic substrate testing devices, in particular to a rapid testing device for thermal conductivity of an alumina ceramic substrate. Background The alumina ceramic substrate is an inorganic nonmetallic material with alumina (Al 2O3) as a main component, has important application in the fields of electronics, semiconductors, aerospace and the like because of excellent heat conductivity, electrical insulation, high hardness and corrosion resistance, and is an important link for evaluating the heat conductivity of the alumina ceramic substrate. The method for testing the thermal conductivity of the alumina ceramic substrate is mainly divided into a steady-state method and a transient method, wherein the transient method adopts laser to heat a sample, the temperature change of the sample in the heating process is measured, the thermal conductivity is calculated by combining the thermal diffusivity, the specific heat capacity and the density of a material, the testing speed is high, the size requirement on the sample is low, but the conventional transient method testing equipment is required to pretreat the ceramic substrate before use, in order to increase the uniform absorption of the laser pulse on the surface of the sample and the emissivity of an infrared detector, graphite spraying is required to be used, a layer of extremely thin and matt carbon black/graphite layer is uniformly sprayed on the upper surface and the lower surface of the sample, after the spraying is finished, the standing and drying are required, the light transmittance detection is also carried out on the sprayed carbon black/graphite layer, the coating is avoided, the preparation period is long, the working procedures are more, additional equipment is required to process, and the manual swing and feeding is required during the testing, so that the thermal conductivity test of the alumina ceramic substrate is low. Based on the above, the invention designs a rapid testing device for the thermal conductivity of an alumina ceramic substrate to solve the above problems. Disclosure of Invention The invention is provided in view of the problems of long pretreatment process period of the ceramic substrate, extra equipment and low test efficiency caused by manual feeding in the prior art. It is therefore an object of the present invention to provide a rapid test device for thermal conductivity of alumina ceramic substrates. As a preferable scheme of the rapid testing device for the thermal conductivity of the alumina ceramic substrate, the rapid testing device comprises a testing machine body; the device comprises a feeding assembly arranged outside a testing machine body, a placing and conveying assembly arranged inside the testing machine body, a pretreatment assembly arranged outside the placing and conveying assembly and a heat conductivity testing device arranged inside the testing machine body; The pretreatment component comprises a spraying piece and a drying piece which are arranged in the test machine body; the feeding assembly comprises a storage frame arranged outside the testing machine body, and a feeding cylinder for feeding is arranged outside the storage frame; The placing and conveying assembly comprises a servo motor arranged in the test machine body, and a placing rack is arranged at the end part of the servo motor; the spraying part comprises a spraying bin arranged outside the placing frame; the drying piece comprises a drying bin arranged outside the placing frame; And the placing frame rotates to enable the ceramic substrate to pass through the spraying bin and the drying bin in sequence to be sprayed with the modified layer, and after the modified layer is dried, the ceramic substrate is rotated to the thermal conductivity testing device for testing. As a preferable scheme of the rapid test device for the thermal conductivity of the alumina ceramic substrate, the feeding assembly further comprises a feeding table arranged outside the test machine body, the storage frame is arranged outside the feeding table, a stacking groove is formed outside the storage frame, a push plate extending into the storage frame is arranged at the end part of the feeding cylinder, and a feed inlet corresponding to the push plate is formed outside the test machine body. As a preferable scheme of the rapid test device for the thermal conductivity of the alumina ceramic substrate, a placing groove is formed in the exterior of the placing frame, a penetrating opening is formed in the bottom surface of the placing groove, one side of the placing frame corresponds to the feeding hole, and the other side of the placing frame corresponds to the thermal conductivity test device. As a preferable scheme of the rapid testing device for the thermal conductivity of the alumina ceramic substrate, the spraying part