Hard alloy special-shaped bar blank sintering boat

Abstract

The utility model discloses a hard alloy special-shaped bar blank sintering boat, which comprises a bottom flat boat and an upper flat boat, a support block is fixedly arranged at the edge of the top surface of the bottom flat boat, the upper flat boat is arranged on the support block, and the upper flat boat is arranged on the support block. And a plurality of through holes for keeping the hard alloy special-shaped bar blank in a vertical state are uniformly formed in the upper flat plate boat. According to the sintering boat, due to the combined design of the bottom flat boat and the upper flat boat and the through hole formed in the upper flat boat, a hard alloy special-shaped bar blank can be inserted into the upper flat boat, the bottom of the hard alloy special-shaped bar blank is placed on the bottom flat boat, vertical sintering is achieved, a sintered product is not prone to deformation and toppling, and the service life of the hard alloy special-shaped bar blank is prolonged. The production of waste products is reduced, the product percent of pass is improved, the product quality is improved, and the boat is simple in structure and easy to manufacture and maintain.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hard alloy technical field especially relates to a sintering boat. BACKGROUND

[0002] At present, the hard alloy bar market competition is increasingly fierce, and reducing production cost becomes the choice of most enterprises. In the production cost of hard alloy, the raw material cost accounts for about 60%, and saving raw material use becomes an important way to reduce the production cost of hard alloy. Pre-slotted blank, special-shaped blank and other types of products can reduce the subsequent processing needs, save raw material use, and thus reduce the overall production cost, which has become the future development trend.

[0003] Due to the characteristics of pre-slotted blank and special-shaped blank products, the compact shape is irregular and has steps. During the sintering process, if it is placed horizontally in the traditional V groove boat for sintering, due to the steps of the product, the horizontal sintering will be subjected to bending moment, and due to the lack of support, the product will be deformed during the sintering process, which cannot meet the use requirements. The vertical sintering of this type of product can overcome the problems existing in horizontal sintering, but pure V groove boat vertical sintering is prone to dumping during transportation, and the traditional V groove boat cannot be used for vertical sintering of this type of product. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies and defects mentioned in the above background technology, and to provide a hard alloy special-shaped bar blank sintering boat which can be vertically sintered, is not easy to deform, and is not easy to dump during transportation.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is:

[0006] A hard alloy special-shaped bar blank sintering boat, comprising a bottom flat boat and an upper flat boat, a support block body is fixedly arranged at the top edge of the bottom flat boat, the upper flat boat is arranged on the support block body, and a plurality of through holes for keeping the hard alloy special-shaped bar blank in a vertical state are uniformly arranged on the upper flat boat.

[0007] In the above sintering boat, preferably, the support block body is provided with a plurality of support block bodies, an upper groove body is arranged at the top edge of the bottom flat boat, the bottom of the support block body is provided with a lower insertion strip matched with the upper groove body, and the support block body is fixedly inserted into the upper groove body through the lower insertion strip. Through this arrangement, the support block body can be stably fixed in the upper groove body through the lower insertion strip, and this arrangement can realize quick installation and disassembly, improving the work efficiency. The above upper groove body can be arranged along the length of the top edge of the bottom flat boat, and the position of the upper flat boat can be adjusted according to the requirements.

[0008] Preferably, the support block is provided with an upper inserting strip above the support block, and the bottom plate boat is provided with a lower groove at the edge of the bottom surface of the bottom plate boat, which is matched with the upper inserting strip. This arrangement facilitates the stacking of multiple sintering boats in an up-down manner through the matching of the upper inserting strip and the lower groove, ensuring the stability of the boats during the stacking process, and the structure is simple and fast to stack and disassemble, which is convenient to operate.

[0009] Preferably, the support block is in a convex structure, including a first plate body and a second plate body, the second plate body is arranged on the first plate body, and the width of the second plate body is smaller than that of the first plate body. The edge of the upper plate boat is provided with a slot for matching with the second plate body, the second plate body is arranged in the slot, and the upper plate boat is arranged on the first plate body. The convex structure of the support block can improve the stability of the whole structure, and the arrangement makes the installation and disassembly of the upper plate boat simple and fast, which is convenient to operate. In addition, the matching of the second plate body and the slot can ensure the accurate positioning of the upper plate boat.

[0010] Preferably, a plurality of positioning holes are uniformly arranged on the bottom plate boat, and the positioning holes are arranged in one-to-one correspondence with the through holes. Through the cooperation of the positioning holes and the through holes, the hard alloy special-shaped bar blank can be quickly positioned, and displacement is not easy to occur, thereby ensuring product quality.

[0011] Preferably, the width of the slot is greater than the width of the second plate body and smaller than the width of the first plate body. The top surface of the first plate body is provided with a plurality of triangular protrusions with sharp corners upward, and the bottom surface of the upper plate boat is provided with a plurality of triangular grooves matched with the triangular protrusions. When the positioning holes and the through holes are used in cooperation, the higher the alignment accuracy of the positions of the bottom plate boat and the upper plate boat, the better. At this time, the width of the slot and the second plate body are required to be well matched and tightly clamped. In this case, disassembly is relatively difficult. The width of the slot of the utility model is greater than the width of the second plate body. The setting of the slot width can further make the installation and disassembly of the upper plate boat more simple and fast. Only the slot needs to be roughly clamped at the second plate body, which improves the disassembly work efficiency. Subsequently, through the cooperation of the triangular protrusions and the triangular grooves, the preliminary accurate positioning of the upper plate boat and the support block can be quickly realized, horizontal shaking is prevented, the structure is simple, and the operation is convenient. The triangular protrusions are arranged on the first plate body instead of the upper plate boat, which avoids the existence of protrusions on the surface of the upper plate boat and affects storage. The position of the triangular groove arranged on the upper plate boat is matched with the triangular protrusion, so as to ensure that the positions of the positioning hole and the through hole are aligned when the triangular groove and the triangular protrusion are matched.

[0012] Preferably, the top of the first plate body is provided with two inclined lower fixing holes, the two fixing holes on the top of the first plate body are symmetrically arranged along the second plate body, the upper flat boat is provided with two upper fixing holes which are arranged in an inclined manner and used for cooperating with the fixing holes, the upper fixing holes and the lower fixing holes are kept in alignment on the same straight line, and graphite plugs are arranged in the upper fixing holes and the lower fixing holes. The arrangement is further positioning of the upper flat boat and the supporting block, which can effectively prevent longitudinal displacement and avoid up and down shaking, and the structure is more stable. The upper fixing holes and the lower fixing holes are kept in alignment on the same straight line refers to that when the triangular groove and the triangular protrusion are matched, the upper fixing holes and the lower fixing holes are kept in alignment on the same straight line, so that the graphite plugs are inserted. The inclination direction of the upper fixing holes and the lower fixing holes is not limited, and the inclination direction can be inward or outward. More preferably, the positioning and fixing structure of the triangular groove, the triangular protrusion, the fixing hole and the graphite plug is arranged at each slot and each supporting block.

[0013] Preferably, the diameter of the through hole is greater than the outer diameter of the hard alloy profiled bar blank. The arrangement can make the hard alloy profiled bar blank be easily inserted into the through hole and kept in a vertical state.

[0014] Preferably, the bottom flat boat, the upper flat boat and the supporting block are all made of graphite.

[0015] Preferably, the hard alloy profiled bar blank includes a pre-slotted blank and a profiled cutter blank, and the blank has a step. When vertical sintering is performed, the step is clamped in the through hole of the upper flat boat, the step is supported by the edge of the through hole, and the product is not easy to deform during sintering.

[0016] Compared with the prior art, the sintering boat of the present application has the following advantages:

[0017] The sintering boat of the present application has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0019] Figure 1 Front view of sintering boat structure of Example 1;

[0020] Figure 2 Top view of sintering boat structure of Example 1;

[0021] Figure 3 Left view of sintering boat structure of Example 1;

[0022] Figure 4 Left view of sintering boat stack structure of Example 2;

[0023] Figure 5 Front view of sintering boat structure of Example 3.

[0024] Legend

[0025] 1, bottom flat boat; 2, upper flat boat; 3, support block; 4, through hole; 5, irregular bar blank; 11, upper groove body; 12, lower groove body; 31, upper insertion strip; 32, lower insertion strip; 33, first plate body; 34, second plate body; 35, triangular protrusion; 36, graphite insertion pin. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the following will be combined with the description and the preferred embodiments to make a more comprehensive and detailed description of the present application, but the protection scope of the present application is not limited to the following specific embodiments.

[0027] It should be particularly noted that when a certain element is described as "fixed to, fixedly connected to, connected to or communicated to" another element, it can be directly fixed, fixedly connected, connected or communicated to another element, or indirectly fixed, fixedly connected, connected or communicated to another element through other intermediate connecting elements.

[0028] Unless otherwise defined, all the professional terms used in the following are the same as those commonly understood by those skilled in the art. The professional terms used in this paper are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present application.

[0029] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application can be purchased from the market or can be prepared by existing methods.

[0030] Example 1:

[0031] As Figures 1 to 3As shown, the sintering boat for hard alloy special-shaped rod blanks of the embodiment comprises a bottom flat boat 1 and an upper flat boat 2, the top edge of the bottom flat boat 1 is fixed with a support block 3, and the upper flat boat 2 is arranged on the support block 3, and a plurality of through holes 4 for keeping the hard alloy special-shaped rod blanks 5 in a vertical state are uniformly arranged on the upper flat boat 2.

[0032] In the embodiment, a plurality of support blocks 3 are arranged, an upper groove 11 is arranged at the top edge of the bottom flat boat 1, the bottom of the support block 3 is provided with a lower insertion strip 32 matched with the upper groove 11, and the support block 3 is inserted and fixed in the upper groove 11 through the lower insertion strip 32.

[0033] In the embodiment, the support block 3 is in a convex structure, comprising a first plate body 33 and a second plate body 34, the second plate body 34 is arranged on the first plate body 33 and has a width smaller than that of the first plate body 33, the edge of the upper flat boat 2 is provided with a slot matched with the second plate body 34, the second plate body 34 is arranged in the slot, and the upper flat boat 2 is arranged on the first plate body 33. The width direction is the left-right direction. The number of the support blocks 3 can be four, and the number can be flexibly adjusted in other embodiments. The slot and the second plate body 34 can be matched to realize the clamping positioning of the upper flat boat 2 and the support block 3. Figure 1

[0034] In the embodiment, the hole diameter of the through hole 4 is greater than the outer diameter of the hard alloy special-shaped rod blank 5.

[0035] In the embodiment, the support block 3 is a special graphite insertion block. The specific steps can be that the lower insertion strip 32 of the support block 3 is first inserted and fixed in the upper groove 11 of the bottom flat boat 1, then the upper flat boat 2 is clamped on the support block 3 through the slot, and the installation is completed. When the furnace is prepared, the special-shaped rod blank 5 is inserted into the through hole 4 until the bottom flat boat 1, so that the special-shaped rod blank 5 is always kept in a vertical state.

[0036] Embodiment 2:

[0037] As shown, the sintering boat for hard alloy special-shaped rod blanks of the embodiment is basically the same as that of embodiment 1, and the difference lies in that the support block 3 is provided with an upper insertion strip 31, and the bottom edge of the bottom flat boat 1 is provided with a lower groove 12 matched with the upper insertion strip 31. When the sintering boat is stacked and placed, each upper insertion strip 31 is inserted and clamped in the lower groove 12 of the bottom of the bottom flat boat 1, so that the whole stacked structure is more stable, and a plurality of sintering boats can be stacked and arranged. Figure 4 Embodiment 3:

[0038] As shown, the sintering boat for hard alloy special-shaped rod blanks of the embodiment is basically the same as that of embodiment 1, and the difference lies in that the support block 3 is provided with an upper insertion strip 31, and the bottom edge of the bottom flat boat 1 is provided with a lower groove 12 matched with the upper insertion strip 31. When the sintering boat is stacked and placed, each upper insertion strip 31 is inserted and clamped in the lower groove 12 of the bottom of the bottom flat boat 1, so that the whole stacked structure is more stable, and a plurality of sintering boats can be stacked and arranged.

[0039] Figure 5 ​​As shown, the sintering boat of the hard alloy special-shaped bar blank of the embodiment is basically the same as that of the embodiment 1, and the difference lies in that:

[0040] In the embodiment, a plurality of positioning holes are uniformly arranged on the bottom flat boat 1, and the positioning holes are arranged in one-to-one correspondence with the through holes 4.

[0041] In the embodiment, the width of the notch is greater than the width of the second plate body 34 and less than the width of the first plate body 33, the top surface of the first plate body 33 is provided with a plurality of triangular protrusions 35 with sharp corners upward, and the bottom surface of the upper flat boat 2 is provided with a plurality of triangular grooves matched with the triangular protrusions 35. Figure 5 As shown in the figure, the number of the triangular protrusions 35 on the first plate body 33 is 4, and 2 are arranged on each side of the second plate body 34.

[0042] In the embodiment, the lower fixing holes are arranged on the top of the first plate body 33, the fixing holes on the top of the first plate body 33 are arranged symmetrically along the second plate body 34, the upper flat boat 2 is provided with upper fixing holes matched with the fixing holes, the upper fixing holes and the lower fixing holes are aligned on the same straight line, and the graphite insertion pins 36 are arranged in the upper fixing holes and the lower fixing holes.

[0043] In the embodiment, specifically, first, the lower insertion strip 32 of the support block 3 is inserted and fixed in the upper groove body 11 of the bottom flat boat 1, then the upper flat boat 2 is placed on the support block 3, the triangular protrusions 35 are matched with the triangular grooves on the bottom surface of the upper flat boat 2 to form clamping, and then the graphite insertion pins 36 are inserted into the upper fixing holes and the lower fixing holes to complete the installation, when the furnace is prepared, the special-shaped bar blank 5 is inserted into the through hole 4 until the positioning hole of the bottom flat boat 1, so that the position of the special-shaped bar blank 5 is fixed and displacement is not easy, and the vertical state is always maintained.

[0044] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can be changed and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sintering boat for cemented carbide profiled bar blanks, c h a r a c t e r i s e d in that Including bottom flat boat (1) and upper flat boat (2), the top surface edge of bottom flat boat (1) is fixed with support block (3), upper flat boat (2) is arranged on support block (3), a plurality of through holes (4) for keeping hard alloy special-shaped bar blank (5) in vertical state are uniformly arranged on upper flat boat (2).

2. A sintering boat for cemented carbide profiled bar blanks according to claim 1, c h a r a c t e r i s e d in that Support block (3) is provided with multiple, upper groove (11) is arranged at the top surface edge of bottom flat boat (1), the bottom of support block (3) is provided with lower insertion strip (32) for matching with upper groove (11), support block (3) is inserted and fixed in upper groove (11) through lower insertion strip (32).

3. A sintering boat for cemented carbide profiled bar blanks according to claim 1, c h a r a c t e r i s e d in that Upper insertion strip (31) is arranged above support block (3), lower groove (12) is arranged at the bottom surface edge of bottom flat boat (1) for matching with upper insertion strip (31).

4. A sintering boat for cemented carbide profiled bar blanks according to claim 1, c h a r a c t e r i s e d in that Support block (3) is convex structure, including first plate body (33) and second plate body (34), second plate body (34) is arranged on first plate body (33), and the width of second plate body (34) is less than that of first plate body (33), the edge of upper flat boat (2) is provided with notch for cooperating with second plate body (34), second plate body (34) is arranged in notch, and upper flat boat (2) is arranged on first plate body (33).

5. A sintering boat for cemented carbide profiled bar blanks according to claim 4, c h a r a c t e r i z e d in that A plurality of positioning holes are uniformly arranged on bottom flat boat (1), and the positioning holes are arranged one by one corresponding to through holes (4).

6. A sintering boat for cemented carbide profiled bar blanks according to claim 5, c h a r a c t e r i z e d in that The width of notch is greater than the width of second plate body (34) and less than the width of first plate body (33), the top surface of first plate body (33) is provided with a plurality of triangular protrusions (35) with sharp corners upward, and the bottom surface of upper flat boat (2) is provided with a plurality of triangular grooves matched with triangular protrusions (35).

7. A sintering boat for cemented carbide profiled bar blanks according to claim 6, c h a r a c t e r i z e d in that Lower fixing holes are arranged on both sides of the top of first plate body (33) and are arranged symmetrically along second plate body (34), upper fixing holes are arranged on upper flat boat (2) and are matched with fixing holes, upper fixing holes and lower fixing holes are aligned and kept on the same straight line, and graphite insertion pins (36) are arranged in upper fixing holes and lower fixing holes.

8. A sintering boat of cemented carbide profiled bar blanks according to any one of claims 1 - 7, c h a r a c t e r i z e d in that The hole diameter of through hole (4) is greater than the outer diameter of hard alloy special-shaped bar blank (5).

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