Boat for sintering hard alloy

Abstract

The utility model discloses a boat for sintering hard alloy, which comprises a plurality of flat boats which are stacked up and down, and a plurality of positioning holes are arranged on four sides of each flat boat. The connecting piece is limited in the positioning hole and comprises a positioning part and a bearing part arranged at the top end of the positioning part, the bearing part is located above the positioning hole, and an inserting groove is formed in the upper surface of the bearing part; when the plurality of flat boats are arranged in parallel up and down, the bottom of the upper positioning part in every two adjacent layers is vertically inserted into the slot of the lower bearing part, so that a sintering space without edges on the periphery is reserved between the two adjacent layers of flat boats; according to the utility model, the plurality of layers of boats are sequentially stacked up and down through the fasteners on each layer, so that the space without edges on the periphery is beneficial to gas circulation during sintering, the sintering atmosphere is more uniform, and the product quality and uniformity are improved; and when products with different thicknesses are sintered, only connecting pieces with different thicknesses need to be replaced, so that the production efficiency is high, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a graphite boat, especially a boat for sintering of hard alloy. BACKGROUND

[0002] At present, in the production process of hard alloy products, the graphite boat for sintering of hard alloy products is a vessel for bearing sintered products, and there are many types, and the shape thereof is usually determined according to the shape of the hard alloy products to be sintered.

[0003] In actual sintering operation, the graphite boat with a periphery needs to be customized into different specifications, so that different products need to be frequently replaced when sintering, which is complicated to operate and low in production efficiency. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of the prior art and provides a boat for sintering of hard alloy, which is simple in structure, good in sintering effect, high in space utilization rate and low in cost.

[0005] To achieve the above object, the utility model adopts the technical scheme of a boat for sintering of hard alloy, comprising:

[0006] The plurality of flat plate boats are arranged in a stacked manner, and each flat plate boat is provided with a plurality of positioning holes arranged uniformly on four edges thereof.

[0007] The connecting piece is limited in the positioning hole, and the connecting piece comprises a positioning portion and a bearing portion arranged at the top end of the positioning portion, and the bearing portion is located above the positioning hole, and the upper surface of the bearing portion is provided with a slot.

[0008] When the plurality of flat plate boats are arranged in parallel, the bottom of the positioning portion in each adjacent two layers is vertically inserted into the slot of the bearing portion in the lower layer, so that a sintering space without a periphery is left between the adjacent two layers of flat plate boats.

[0009] Further, the connecting piece is of a telescopic structure.

[0010] Further, the cross section of the connecting piece is in the shape of T.

[0011] Further, the material of the flat plate boat is graphite.

[0012] Further, the material of the connecting piece is graphite.

[0013] Further, the number of positioning holes is six, and the six positioning holes are uniformly distributed on the four sides of the flat boat.

[0014] Due to the use of the above technical scheme, the utility model has the following advantages compared with the prior art:

[0015] 1. The hard alloy sintering boat of the utility model, through the fastener on each layer, the multilayer boat is arranged in a stack, the sintering space formed by the multilayer boat has no edge, which is beneficial to the gas circulation during sintering, the sintering atmosphere is more uniform, the product quality and uniformity are improved, and when continuously sintering products of the same thickness, the connecting piece does not need to be removed each time, and the production efficiency is improved.

[0016] 2. When sintering products of different thicknesses, only the connecting piece of different thickness needs to be replaced, the sintering space in the vertical direction can be better utilized, the production efficiency is improved, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The technical scheme of the utility model will be further described below with reference to the drawings:

[0018] Figure 1 It is a three-dimensional structure schematic view of an embodiment of the utility model;

[0019] Figure 2 It is a front view of the utility model;

[0020] Figure 3 It is a structure schematic view when a single flat boat and a connecting piece are separated in an embodiment of the utility model;

[0021] Figure 4 It is a partial schematic view after the uppermost flat boat is omitted in an embodiment of the utility model;

[0022] 1, flat boat; 2, connecting piece; 10, positioning hole; 11, sintering space 11; 20, positioning part; 21, bearing part; 22, slot. DETAILED DESCRIPTION

[0023] In order to enable personnel in the technical field to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0024] The utility model provides a kind of hard alloy sintering boat, to solve the hard alloy sintering boat with four edges in prior art, sintering atmosphere is not uniform, product quality and uniformity are poor, and the problem of low space utilization.

[0025] For the convenience of understanding, the specific process in the embodiments of the present application is described below, please refer to Figures 1 to 3 The hard alloy sintering boat in the embodiments of the present application includes a flat boat 1 and a coupling piece 2. Multiple flat boats 1 are stacked vertically, and each flat boat 1 has four edges with multiple evenly distributed positioning holes 10. The coupling piece 2 is limited in the positioning hole 10. The coupling piece 2 includes a positioning part 20 and a bearing part 21 on the top of the positioning part 20. The bearing part 21 is above the positioning hole 10, and the upper surface of the bearing part 21 has a slot 22.

[0026] Further, the cross section of the coupling piece 2 is T-shaped, that is, the positioning part 20 and the bearing part 21 are T-shaped. When the positioning part 20 is limited in the positioning hole 10, the bearing part 21 is above the positioning hole 10. The horizontal area of the bearing part 21 is larger than that of the positioning part 20, so the bearing part 21 can well play the role of bearing. The slot 22 is on the upper surface of the bearing part 21 to adapt to the positioning part 20 in the upper coupling piece 2. When multiple coupling pieces 2 are vertically arranged, the lower end of each positioning part 20 can be inserted into the slot 22. Except for the first positioning part 20 inserted into the positioning hole 10 of the lowest flat boat 1.

[0027] Further, in this embodiment, the materials of the flat boat 1 and the coupling piece 2 are graphite. Because it is high-temperature sintering, graphite material is used. Graphite has very good high-temperature resistance. In addition, graphite can maintain high strength and stability at high temperature. Of course, other materials can also be used as long as they can maintain strength and stability at high temperature.

[0028] Further, in this embodiment, the number of positioning holes 10 is six, and the six positioning holes 10 are evenly distributed in the four edges of the flat boat 1. Six positioning holes 10 are used here to correspond to six coupling pieces 2. This can make it possible to support thicker products. Four can be used for thinner products, and adaptive adjustment can be made according to needs.

[0029] Based on Figure 2As shown, in actual use, when a plurality of the flat boat vessels 1 are arranged in parallel, the positioning portions 20 in the upper connecting pieces 2 are vertically inserted into the insertion slots 21 of the lower bearing portions 20 in each adjacent two layers, except that the positioning portion 20 in the bottom connecting piece 2 is not inserted into the insertion slot, thereby fixing the flat boat vessels 1 in each adjacent two layers in a vertical direction, and further stacking a plurality of the flat boat vessels 1 in a vertical direction, while leaving a sintering space 11 with no periphery between the adjacent two layers of the flat boat vessels, which is beneficial to the gas circulation during sintering, and the sintering atmosphere is more uniform, thereby improving the product quality and uniformity, and N boat vessels can be stacked and sintered during actual sintering, and the processing efficiency is high.

[0030] Further, by adjusting the thickness of the bearing portion 20, the vertical sintering space 11 can be fully utilized, and the sintering efficiency is improved.

[0031] When sintering products with different thicknesses is required, only the connecting pieces in the same layer of the flat boat vessels 1 need to be replaced with the same specification of the adapted product, specifically, the thickness of the bearing portion 20 is adjusted, so that the sintering space 11 can be better utilized, the production efficiency is improved, and the production cost is reduced; at the same time, when continuously sintering products with the same thickness, the connecting piece 2 does not need to be removed every time, and the production efficiency is improved.

[0032] Further, in the embodiment, the connecting piece 2 can also adopt a telescopic structure, so that the operation is more convenient during actual use, and only the height of the connecting piece 2 needs to be adjusted, and a level meter is provided for horizontal adjustment.

[0033] In summary, the hard alloy sintering boat vessel has the advantages of simple structure, convenient operation, high sintering efficiency and space utilization, and better meets the actual processing requirements.

[0034] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments.

Claims

1. A cemented carbide sintering boat, characterized in that: include: A flat boat (1), wherein a plurality of the flat boats (1) are stacked up and down, and each of the flat boats (1) is provided with a plurality of evenly distributed positioning holes (10) on four sides; A connecting member (2) is positioned in the positioning hole (10), the connecting member (2) comprising a positioning portion (20) and a bearing portion (21) disposed at the top of the positioning portion (20), the bearing portion (21) being located above the positioning hole (10), and a slot (22) being formed on the upper surface of the bearing portion (21); When a plurality of the flat boat dishes (1) are arranged in parallel up and down, the bottom of the positioning portion (20) located above in each two adjacent layers is vertically inserted into the slot (22) located below the supporting portion (21), so that a sintering space (11) with no edges is left between the flat boat dishes (1) of the two adjacent layers.

2. The cemented carbide sintering boat according to claim 1, wherein: The connecting piece (2) is a telescopic structure.

3. The cemented carbide sintering boat according to claim 1, wherein: The cross section of the connecting piece (2) is T-shaped.

4. The cemented carbide sintering boat according to claim 1, wherein: The material of the flat boat (1) is graphite.

5. The cemented carbide sintering boat according to claim 1, wherein: The material of the connecting piece (2) is graphite.

6. The cemented carbide sintering boat according to claim 1, wherein: The number of the positioning holes (10) is six, and the six positioning holes (10) are evenly distributed on the four sides of the flat boat (1).

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