阅读说明：本技术 大型扁平板类零件热处理工装及热处理方法 (Heat treatment tool and heat treatment method for large flat plate parts ) 是由 石如星 席志永 王敬伟 张广威 苏文博 林乙丑 张�杰 张沛 刘志刚 李岩 代博 于 2021-05-27 设计创作，主要内容包括：本发明提供一种大型扁平板类零件热处理工装及热处理方法,其中,热处理工装包括两个相对设置并用于支撑大型扁平板类零件的U型支撑件,两个U型支撑件均沿水平方向设置,两个U型支撑件的顶部及不具有开口的一端通过若干个间隔设置的加强筋对应连接,每一个U型支撑件的两端顶部均设置有吊孔,U型支撑件的开口端设置有活动连接杆,热处理工装的结构简单,便于制作,制作成本低,可靠性高,安全性好；同时,本发明在对大型扁平板类零件进行热处理时,操作简便,仅使用起重设备一个吊钩,适用范围广；而且,大型扁平板类零件在工装的作用下,可以实现零件水平装炉加热,确保加热时稳定,出炉时翻转至接近竖直淬火,改善淬火冷却条件,减小变形。(The invention provides a heat treatment tool and a heat treatment method for large flat plate parts, wherein the heat treatment tool comprises two U-shaped supporting pieces which are oppositely arranged and used for supporting the large flat plate parts, the two U-shaped supporting pieces are arranged along the horizontal direction, the tops of the two U-shaped supporting pieces and one end without an opening are correspondingly connected through a plurality of reinforcing ribs which are arranged at intervals, the tops of two ends of each U-shaped supporting piece are provided with hanging holes, and the opening end of each U-shaped supporting piece is provided with a movable connecting rod; meanwhile, when the large flat plate part is subjected to heat treatment, the method is simple and convenient to operate, only one lifting hook of the hoisting equipment is used, and the application range is wide; and moreover, under the action of the tool, the large flat plate part can be horizontally charged and heated, the stability during heating is ensured, the large flat plate part is turned to be close to vertical quenching during discharging, the quenching cooling condition is improved, and the deformation is reduced.)

1. Large-scale flat plate class part heat treatment frock, including two relative settings and be used for supporting the U type support piece of large-scale flat plate class part, its characterized in that: two U type support piece all set up along the horizontal direction, and the strengthening rib that two U type support piece's top and do not have open-ended one end and set up through a plurality of interval corresponds the connection, and each U type support piece's both ends top all is provided with the lewis hole, and U type support piece's open end is provided with swing joint pole, and swing joint pole's one end articulates to one of them side of U type support piece open end, and swing joint pole's free end can rotate around the pin joint and fix the opposite side at the open end at pivoted in-process accessible pin.

2. The large flat plate part heat treatment tool according to claim 1, characterized in that: and two ends of the reinforcing rib are connected to the corresponding U-shaped supporting piece through fixing nuts.

3. The heat treatment method of the large flat plate part is characterized by comprising the following steps: the heat treatment tool set forth in any one of claims 1-2 is adopted, and the heat treatment method comprises the following steps:

step 1), manufacturing the heat treatment tool, wherein reinforcing ribs are arranged at the top and the end without the opening of the heat treatment tool, and the reinforcing ribs are not arranged at the bottom of the heat treatment tool;

step 2), when large flat plate parts are horizontally charged and heated, arranging a plurality of supporting pads below the large flat plate parts, and reserving a non-supporting pad area which can be inserted by a heat supply treatment tool below the large flat plate parts;

step 3), after the large flat plate part is heated, hoisting holes formed in the tops of two ends of the heat treatment tool are hoisted by using hoisting equipment at the same time, the heat treatment tool is in a horizontal state, and then the free end of the movable connecting rod is rotated to the upper side, so that the open end of the heat treatment tool is in an open state;

step 4), inserting a heat treatment tool along a reserved non-support area from the lower part of the large flat plate part, loading the large flat plate part into the tool, pulling down the free end of the movable connecting rod, and inserting a pin to enable the open end of the heat treatment tool to be in a closed state;

and 5) hoisting the heat treatment tool and the large flat plate part to the open ground together by utilizing hoisting equipment, unloading the hoisting hole without the end with the opening, hoisting only the hoisting hole with the end with the opening, hoisting the heat treatment tool and the large flat plate part to be in a nearly vertical state, and finally immersing the heat treatment tool and the large flat plate part in a medium for quenching.

Technical Field

The invention belongs to the technical field of heat treatment of metal materials, and particularly relates to a heat treatment tool and a heat treatment method for large flat plate parts.

Background

The plane shape of the large flat part is circular, rectangular, polygonal and the like, and the large flat part is characterized by large plane size and small thickness size, and the large flat part is easy to topple when vertically placed during furnace entering heat treatment and heating, and is difficult to lift and discharge from a furnace when vertically placed, so that the workpiece can be only horizontally charged.

After large flat parts are horizontally placed and heated, if the large flat parts are horizontally lifted and quenched, the large flat parts are immersed in a quenching medium, because the cooling condition of the upper end surface is better, the steam of the quenching medium can float upwards, the medium can freely convect, the steam of the lower end surface can float upwards difficultly, the medium can also convect difficultly, so that the upper end surface and the lower end surface have great cold speed difference, the temperature difference of the upper surface and the lower surface of a workpiece is great, great temperature stress exists on the upper end surface and the lower end surface, during tissue transformation, because of the difference of tissue transformation time and speed, great tissue stress can also be generated, and finally, the parts can be caused to generate convex or concave deformation, and the use size is difficult to ensure. Meanwhile, the cooling effect of the lower end surface is not good, and mechanical properties such as hardness and strength sometimes cannot meet technical requirements. And when vertical quenching is carried out, the cooling speed of the two end faces is relatively uniform, and the deformation is small. However, it is difficult to turn the part from a horizontal angle to a vertical angle in a hot state and to lift the immersion medium.

Disclosure of Invention

In view of the above, the present invention provides a heat treatment tool and a heat treatment method for horizontal heating and vertical quenching of large flat plate parts, which can realize horizontal charging and heating of the parts, ensure stability during heating, overturn to be close to vertical quenching during discharging, improve quenching cooling conditions, and reduce deformation.

In order to achieve the purpose, the invention adopts the technical scheme that: large-scale flat plate part heat treatment frock, U type support piece including two relative settings and being used for supporting large-scale flat plate part, two U type support piece all set up along the horizontal direction, two U type support piece's top and do not have the strengthening rib correspondence that open-ended one end set up through a plurality of interval, each U type support piece's both ends top all is provided with the lewis hole, U type support piece's open end is provided with swing joint pole, swing joint pole's one end articulates wherein one side to U type support piece open end, swing joint pole's free end can rotate around the pin joint and fix the opposite side at the open end at pivoted in-process accessible pin.

Furthermore, both ends of the reinforcing rib are connected to the corresponding U-shaped supporting piece through fixing nuts.

The heat treatment method of the large flat plate part comprises the following steps:

step 1), manufacturing the heat treatment tool, wherein reinforcing ribs are arranged at the top and the end without the opening of the heat treatment tool, and the reinforcing ribs are not arranged at the bottom of the heat treatment tool;

step 2), when large flat plate parts are horizontally charged and heated, arranging a plurality of supporting pads below the large flat plate parts, and reserving a non-supporting pad area which can be inserted by a heat supply treatment tool below the large flat plate parts;

step 3), after the large flat plate part is heated, hoisting holes formed in the tops of two ends of the heat treatment tool are hoisted by using hoisting equipment at the same time, the heat treatment tool is in a horizontal state, and then the free end of the movable connecting rod is rotated to the upper side, so that the open end of the heat treatment tool is in an open state;

step 4), inserting a heat treatment tool along a reserved non-support area from the lower part of the large flat plate part, loading the large flat plate part into the tool, pulling down the free end of the movable connecting rod, and inserting a pin to enable the open end of the heat treatment tool to be in a closed state;

and 5) hoisting the heat treatment tool and the large flat plate part to the open ground together by utilizing hoisting equipment, unloading the hoisting hole without the end with the opening, hoisting only the hoisting hole with the end with the opening, hoisting the heat treatment tool and the large flat plate part to be in a nearly vertical state, and finally immersing the heat treatment tool and the large flat plate part in a medium for quenching.

Compared with the prior art, the invention has the beneficial effects that:

1. the heat treatment tool has the advantages of simple structure, convenience in manufacturing, low manufacturing cost, high reliability and good safety;

2. when the heat treatment is carried out on large flat plate parts, the operation is simple and convenient, only one lifting hook of the hoisting equipment is used, and the application range is wide; and moreover, under the action of the tool, the large flat plate part can be horizontally charged and heated, the stability during heating is ensured, the large flat plate part is turned to be close to vertical quenching during discharging, the quenching cooling condition is improved, and the deformation is reduced.

Drawings

FIG. 1 is a front view of a heat treatment tool for large flat plate parts according to the present invention;

FIG. 2 is a top view of the heat treatment tool for large flat plate parts according to the present invention;

FIG. 3 is a schematic diagram showing the distribution of the underlying cushioned region and the unsupported region of the large flat plate-like part in the horizontal charging and heating process;

the labels in the figure are: 1. u-shaped supporting piece, 2, reinforcing rib, 3, lifting hole, 4, movable connecting rod, 5, pin, 6, fixing nut, 7 and large flat plate parts.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the large flat plate part heat treatment tool includes two U-shaped supporting members 1 which are oppositely arranged and used for supporting a large flat plate part 7, the two U-shaped supporting members 1 are both arranged along a horizontal direction, the tops and the ends without openings of the two U-shaped supporting members 1 are correspondingly connected through a plurality of reinforcing ribs 2 which are arranged at intervals, further, both ends of each reinforcing rib 2 are connected to the corresponding U-shaped supporting member 1 through fixing nuts 6, and it should be noted here that no reinforcing rib is arranged between the bottoms of the two U-shaped supporting members.

The top of each U-shaped support piece is provided with a lifting hole 3, when the lifting holes 3 arranged at the tops of the two ends of the heat treatment tool are lifted, the tool is in a horizontal state, and when only one lifting hole 3 is lifted, the tool is in a state close to a vertical state. The open end of the U-shaped supporting part 1 is provided with a movable connecting rod 4, one end of the movable connecting rod 4 is hinged to one side of the open end of the U-shaped supporting part 1, and the free end of the movable connecting rod 4 can rotate around the hinged point and can be fixed to the other side of the open end through a pin 5 in the rotating process. The heat treatment tool has the advantages of simple structure, convenience in manufacturing, low manufacturing cost, high reliability and good safety.

The heat treatment method of the large flat plate part adopts the heat treatment tool and specifically comprises the following steps:

step 1), manufacturing the heat treatment tool, wherein the top and the end without the opening of the heat treatment tool are provided with reinforcing ribs 2, and the bottom is not provided with the reinforcing ribs 2;

step 2), when the large flat plate part 7 is horizontally charged and heated, a plurality of supporting pads are arranged below the large flat plate part, and a non-supporting pad area which can be inserted by a heat supply processing tool is reserved below the large flat plate part, wherein the following description is required: the supporting pad is stable and firm, the number of the supporting pad is enough to effectively prevent the part from being heated and deformed, and meanwhile, two rectangular through areas are reserved as non-supporting areas so as to meet the requirement that the tool enters horizontally, the gravity center of the part is located in the middle of the two rectangular through areas, namely the non-supporting areas, and the distribution conditions of the supporting pad areas and the non-supporting areas in the embodiment are shown in fig. 3;

step 3), after the heating of the large flat plate part 7 is finished, hoisting holes 3 arranged at the tops of two ends of the heat treatment tool are hoisted simultaneously by utilizing hoisting equipment, at the moment, the heat treatment tool is in a horizontal state, and then the free end of the movable connecting rod 4 is rotated to the upper side, so that the open end of the heat treatment tool is in an open state;

step 4), inserting a heat treatment tool into the tool from the lower part of the large flat plate part 7 along a reserved non-support area, loading the large flat plate part into the tool, pulling down the free end of the movable connecting rod 4, and inserting the pin 5 to enable the opening end of the heat treatment tool to be in a closed state;

and 5) hoisting the heat treatment tool and the large flat plate part 7 to the open ground together by utilizing hoisting equipment, unloading the hoisting hole 3 without the open end, hoisting only the hoisting hole with the open end, hoisting the heat treatment tool and the large flat plate part to be in a nearly vertical state, and finally immersing the heat treatment tool and the large flat plate part in a medium for quenching together.

When the heat treatment is carried out on large flat plate parts, the operation is simple and convenient, only one lifting hook of the hoisting equipment is used, and the application range is wide; and moreover, under the action of the tool, the large flat plate part can be horizontally charged and heated, the stability during heating is ensured, the large flat plate part is turned to be close to vertical quenching during discharging, the quenching cooling condition is improved, and the deformation is reduced.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.