CN112662859A

CN112662859A - Heat treatment process for motor casing of new energy automobile

Info

Publication number: CN112662859A
Application number: CN202011589027.0A
Authority: CN
Inventors: 王俊有; 蔚明权; 沈鑫
Original assignee: Jiangsu Wencan Die Casting Co ltd
Current assignee: Jiangsu Wencan Die Casting Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-04-16

Abstract

The invention discloses a heat treatment process for a motor shell of a new energy automobile, which comprises the following steps: flatly placing the motor shell on a special material rack, and hoisting the material rack to a feeding track of a heat treatment solution furnace; after the temperature of the heat treatment solution furnace reaches 530 +/-5 ℃, the material frame automatically enters the heat treatment solution furnace and is subjected to heat preservation for 3 hours; when the heat preservation time of the heat treatment solution furnace is over, the material rack is automatically transferred to a cooling platform; the cooling platform senses that the material rack enters, automatically sinks, the product is completely immersed in water, and the temperature of the product is reduced to be below 100 ℃ within 300 seconds; after air cooling is finished, the material rack automatically enters an aging furnace, the temperature is 150-250 ℃, and the temperature is kept for 2 hours; and after the heat preservation of the aging furnace is finished, the material rack automatically enters a product blanking area through a track, the product is loaded and taken after the product is naturally cooled to the room temperature, and the heat treatment process is finished. The invention meets the harsh requirements on mechanical properties and the overall deformation of the product; the invention adopts a special heat treatment material rack, greatly improves the productivity and improves the production efficiency.

Description

Heat treatment process for motor casing of new energy automobile

Technical Field

The invention relates to a heat treatment process for a motor shell of a new energy automobile.

Background

Because the motor belongs to the core safety part of the new energy automobile, the motor shell needs to bear the factors of the whole motor such as the stress, even the collision and the like, and the mechanical properties such as tensile strength, yield strength, elongation percentage and the like are all higher than those of a conventional casting.

The existing heat treatment is a process of solution treatment and artificial aging, the motor casing is directly put into a heat treatment solution furnace for heat treatment, the shape of the heat-treated motor casing is easy to warp, and the working efficiency is influenced.

Disclosure of Invention

The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

The invention aims to provide a heat treatment process for a motor casing of a new energy automobile, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a new energy automobile motor casing heat treatment process comprises the following processing steps:

A. setting: setting the temperature of the heat treatment solution furnace to 530 +/-5 ℃; setting the temperature of an aging furnace to be 150-250 ℃;

B. hoisting: during the temperature rise of the heat treatment solid solution furnace, the motor shell is flatly placed on a special material rack, and the material rack is hoisted to a feeding track of the heat treatment solid solution furnace;

C. solid solution: after the heat treatment solution furnace reaches the set temperature, the material frame automatically enters the heat treatment solution furnace, and the heat is preserved for 3 hours;

D. and (3) cooling: when the heat preservation time of the heat treatment solution furnace is over, the material rack is automatically transferred to a cooling platform;

E. water cooling: the cooling platform senses that the material rack enters, automatically sinks, the product is completely immersed in water, and the temperature of the product is reduced to be below 100 ℃ within 300 seconds;

F. aging: after air cooling is finished, the material rack automatically enters an aging furnace, and heat preservation is carried out for 2 hours; and after the heat preservation of the aging furnace is finished, the material rack automatically enters a product blanking area through the track, when the product is naturally cooled to the room temperature, the product is loaded and taken, and the heat treatment process is finished.

The invention is further improved in that: the work or material rest includes the vertical side's of a plurality of horizontal side's pipes in bottom and a plurality of vertical side's pipes in bottom, the vertical side's of a plurality of bottoms pipe in bottom encloses synthetic bottom frame, be equipped with a plurality of stand support side's pipes on the bottom frame, be equipped with horizontal support side's pipe and vertical support angle bar between the stand support side's pipe, the surface of every horizontal support side's pipe and the surface of every vertical support angle bar all are equipped with a plurality of location round steel, be equipped with the vertical side's of top pipe between the top of both sides stand support side's pipe.

The invention is further improved in that: the bottom transverse square tube is provided with a detection flat iron.

The invention is further improved in that: reinforcing rib plates are arranged between the bottom of the upright post supporting square tube and the bottom longitudinal square tube and between the top of the upright post supporting square tube and the top longitudinal square tube.

The invention has the beneficial effects that: the invention meets the harsh requirements on mechanical properties and the overall deformation of the product; the invention adopts a special heat treatment material rack, greatly improves the productivity and improves the production efficiency.

Description of the drawings:

fig. 1 is a front view of a stack;

fig. 2 is a side view of a stack;

FIG. 3 is a schematic view of the structure A-A in FIG. 1;

reference numbers in the figures: 1-bottom transverse square tube, 2-bottom longitudinal square tube, 3-upright post supporting square tube, 4-transverse supporting square tube, 5-longitudinal supporting angle iron, 6-positioning round steel, 7-top longitudinal square tube, 8-lifting ring, 9-detection flat iron and 10-reinforcing rib plate.

The specific implementation mode is as follows:

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 clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Elements and features described in one embodiment of the invention may be combined with elements and features shown in one or more other embodiments. It should be noted that the illustration omits illustration and description of components and processes not relevant to the present invention that are known to those of ordinary skill in the art for clarity purposes. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

In order to make the technical advantages of the embodiments more apparent, the following detailed description of the present invention is provided with reference to the accompanying drawings.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "transmitting" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the two components can be connected mechanically or electrically, directly or through an intermediate medium, or the two components can be communicated with each other. The transmission may be of gas pressure or of electrical data information. The specific meaning of the above terms in the present invention can be understood in terms of specific situations by those of ordinary skill in the art.

In the following detailed description of the embodiments, features of the embodiments may be combined with each other.

The implementation scheme provided by the implementation method is a new energy automobile motor casing heat treatment process, and the processing steps are as follows: advanced setting: setting the temperature of the heat treatment solution furnace to 530 +/-5 ℃; setting the temperature of an aging furnace to be 150-250 ℃; hoisting: during the temperature rise of the heat treatment solid solution furnace, the motor shell is flatly placed on a special material rack, and the material rack is hoisted to a feeding track of the heat treatment solid solution furnace; solid solution: after the heat treatment solution furnace reaches the set temperature, the material frame automatically enters the heat treatment solution furnace, and the heat is preserved for 3 hours; and (3) cooling: when the heat preservation time of the heat treatment solution furnace is over, the material rack is automatically transferred to a cooling platform; water cooling: the cooling platform senses that the material rack enters, automatically sinks, the product is completely immersed in water, and the temperature of the product is reduced to be below 100 ℃ within 300 seconds; aging: after air cooling is finished, the material rack automatically enters an aging furnace, and heat preservation is carried out for 2 hours; and after the heat preservation of the aging furnace is finished, the material rack automatically enters a product blanking area through the track, when the product is naturally cooled to the room temperature, the product is loaded and taken, and the heat treatment process is finished.

The invention relates to a heat treatment method which meets the requirement of high mechanical property of a motor shell, and by reasonably designing a material rack and reasonably distributing products on the material rack, 128 products can be placed on one material rack, the annual capacity can reach 120 thousands of products, and the performance and quality of castings are ensured while the output is improved. As shown in fig. 1 to 3, the material rest includes a plurality of bottom horizontal square pipes 1 and a plurality of bottom vertical square pipes 2, a plurality of bottom horizontal square pipes 1 and a plurality of bottom vertical square pipes 2 enclose the synthetic bottom frame, be equipped with a plurality of stand support square pipes 3 on the bottom frame, be equipped with horizontal support square pipe 4 and vertical support angle bar 5 between the stand support square pipe 3, every horizontal support square pipe 4's surface and every vertical support angle bar 5's surface all are equipped with a plurality of location round steel 6, be equipped with top vertical square pipe 7 between the top of both sides stand support square pipe 3, be equipped with rings 8 on the top vertical square pipe 7, be equipped with on the horizontal square pipe 1 in bottom and detect band iron 9, between the bottom of stand support square pipe 3 and the bottom vertical square pipe 2, all be equipped with deep floor board 10 between the top of stand support square pipe 3 and.

The tensile test piece body is sampled for tensile test, and the performance is to achieve that the tensile strength is more than or equal to 240Mpa, the yield strength is more than or equal to 200Mpa, and the elongation is more than or equal to 1%.

Finally, it should be noted that: although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, means, methods, or steps, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, devices, means, methods, or steps.

Claims

1. a new energy vehicle motor shell heat treatment process is characterized in that: the processing steps are as follows:

A. Setting: Set the temperature of the heat treatment solid solution furnace to increase to 530℃±5℃; set the temperature of the aging furnace to increase it to 150℃-250℃;

B. Hoisting: During the heating period of the heat treatment solution furnace, place the motor shell flat on the material rack, and hoist the material rack to the feed rail of the heat treatment solution furnace;

C. Solid solution: After the heat treatment solid solution furnace reaches the set temperature, the material rack automatically enters the heat treatment solid solution furnace, and is kept for 3 hours at the same time;

D. Cooling: When the holding time of the heat treatment solution furnace is over, the material rack is automatically transferred to the cooling platform;

E. Water cooling: After the cooling platform senses the entry of the material rack, it automatically sinks, the product is completely immersed in water, and the temperature of the product is lowered to below 100 °C within 300 seconds;

F. Aging: After the air cooling is over, the material rack automatically enters the aging furnace and is kept for 2 hours; after the insulation in the aging furnace is completed, the material rack automatically enters the product unloading area through the track, and the product is naturally cooled to room temperature. Finish.

2. A heat treatment process for a motor shell of a new energy vehicle according to claim 1, characterized in that: the material rack comprises a plurality of bottom transverse square tubes (1) and a plurality of bottom longitudinal square tubes (2), a plurality of A bottom horizontal square tube (1) and a plurality of bottom longitudinal square tubes (2) are enclosed to form a bottom frame, a plurality of upright column support square tubes (3) are arranged on the bottom frame, and horizontal supports are arranged between the upright column support square tubes (3). The square tube (4) and the longitudinal support angle iron (5) are provided with a plurality of positioning round steels (6) on the surface of each horizontal support square tube (4) and the surface of each longitudinal support angle iron (5). A top longitudinal square pipe (7) is arranged between the tops of the side column supporting square pipes (3), and a lifting ring (8) is arranged on the top longitudinal square pipe (7).

3 . The heat treatment process for a motor casing of a new energy vehicle according to claim 2 , wherein the bottom horizontal square tube ( 1 ) is provided with a detection flat iron ( 9 ). 4 .

4. The heat treatment process for a motor shell of a new energy vehicle according to claim 2, characterized in that: between the bottom of the column supporting square tube (3) and the bottom longitudinal square tube (2), the column supporting square A reinforcing rib plate (10) is provided between the top of the pipe (3) and the top longitudinal square pipe (7).