阅读说明：本技术 一种汽车电磁减震零件一次成品工艺的保护装置及方法 (Protection device and method for one-step finished product process of automobile electromagnetic damping part ) 是由 邬建尧 于 2020-08-03 设计创作，主要内容包括：本发明一种汽车电磁减震零件一次成品工艺的保护装置及方法,通过预制模具、配制原料、高压一次成型、充氮烧结炉高温烧结、快速风冷、滚动抛光、镀层、检验、包装一系列工艺流程,达到从原料到成品的一次性制成,免去传统的机器钻孔、开槽等加工流程,将传统金属零件加工中不便操作甚至无法操作的工艺难点都一次性解决；具有安全高效、工艺简洁、精密度高、次品率低、成本倍减的有益效果,制造出的成品硬度、密度、光洁度、耐磨性、耐腐蚀性等物理化学性能都优于普通烧结炉烧结出的金属件。(The invention relates to a protection device and a method for a one-time finished product process of an automobile electromagnetic damping part, which are used for realizing one-time manufacture from raw materials to finished products by a series of process flows of prefabricating a die, preparing raw materials, performing high-pressure one-time forming, filling a nitrogen sintering furnace for high-temperature sintering, rapidly cooling by air, rolling and polishing, plating, inspecting, packaging and the like, thereby avoiding the traditional machining flows of drilling, slotting and the like of a machine and solving the process difficulties of inconvenient operation and even incapability of operation in the traditional metal part machining at one time; the method has the advantages of safety, high efficiency, simple process, high precision, low defective rate and cost reduction, and the manufactured finished product has better physical and chemical properties such as hardness, density, smoothness, wear resistance, corrosion resistance and the like than metal pieces sintered by a common sintering furnace.)

1. A protection device and a method for a one-step finished product process of an automobile electromagnetic damping part are characterized by comprising the steps of manufacturing a mold, preparing raw materials, high-pressure forming, high-temperature sintering in a nitrogen-filled sintering furnace, rapid air cooling, rolling polishing, plating, inspecting and packaging;

firstly, a plurality of sets of manufacturing dies for compression molding are manufactured according to the shape and the size of the electromagnetic damping part product of the automobile to be manufactured;

further, according to the components of the electromagnetic damping part product of the automobile to be manufactured, the metal powder raw material, the metal semi-fluid raw material and the metal liquid raw material are proportioned and stirred uniformly according to the proportion to prepare the preparation raw material;

further, filling the preparation raw materials into the manufacturing mold, and completing the high-pressure molding through high-pressure equipment;

further, conveying the high-pressure formed semi-finished product into the nitrogen-filled sintering furnace for high-temperature sintering;

further, instantly air-cooling the semi-finished product sintered at high temperature in the nitrogen-filled sintering furnace to finish the quick air-cooling process operation;

further, the semi-finished product after the quick air cooling is placed into rolling polishing equipment for rolling polishing, so that the surface of the semi-finished product is smooth and clean after rolling friction;

further, the semi-finished product after the rolling polishing is subjected to the plating to form a finished product;

further, the finished products after being plated are subjected to one-by-one inspection, and defective products are removed;

further, the inspected finished product is packaged;

a series of process flows of the primary finished product of the electromagnetic damping part of the automobile are formed.

2. The protection device and method for the primary finished product process of the electromagnetic damping part of the automobile according to claim 1, wherein the nitrogen-filled sintering furnace high-temperature sintering comprises operations of a nitrogen-filled sintering furnace, a product frame and a high-temperature sintering process;

the nitrogen-filled sintering furnace is arranged as a cuboid cabinet and comprises a bottom surface, two lateral surfaces which are symmetrical left and right, and two lateral surfaces which are symmetrical front and back;

heating devices are fixedly arranged on the inner sides of six sides of the nitrogen-filled sintering furnace, a nitrogen-filled cover is fixedly and hermetically arranged on the upper part of the top surface of the nitrogen-filled sintering furnace, and a plurality of vent valves which are through up and down are fixedly arranged on the top surface of the nitrogen-filled sintering furnace; the left and right symmetrical side surfaces of the nitrogen-filled sintering furnace are provided with lifting doors which can move up and down at two ends of the top surface of the nitrogen-filled sintering furnace, and a pair of parallel rails is fixedly arranged on the bottom surface of the nitrogen-filled sintering furnace in the left and right directions.

3. The protection device and method for the primary finished product process of the electromagnetic damping parts of the automobile as claimed in claim 2, wherein the product rack is a rectangular frame slightly smaller than the internal dimension of the nitrogen-filled sintering furnace, and a roller device is fixedly arranged at the bottom of the product rack, so that the product rack just rolls on the pair of parallel rails.

4. The protection device and method for the one-time finished product process of the electromagnetic damping part of the automobile according to claim 2, wherein the high-temperature sintering process comprises the following steps:

lifting the lifting doors on the left side and the right side of the nitrogen-filled sintering furnace;

pushing the product rack with the automobile electromagnetic damping part products placed in the product rack into the nitrogen-filled sintering furnace from the pair of parallel rails for fixing;

opening the ventilation valve while slowly lowering the lifting doors at the left side and the right side, and filling nitrogen into the nitrogen-filled sintering furnace at high pressure through the nitrogen-filled cover;

the lifting doors on the left side and the right side fall completely and are sealed with the bottom surface of the nitrogen-filled sintering furnace in a closed manner;

closing all the vent valves on the top surface of the nitrogen-filled sintering furnace;

and starting the heating devices fixedly arranged on the inner sides of six surfaces of the nitrogen-filled sintering furnace to perform high-temperature sintering.

Technical Field

The invention relates to the field of manufacturing process methods of automobile metal parts, in particular to a protection device and a protection method for a one-step finished product process of an automobile electromagnetic damping part.

Background

Most of the traditional metal part manufacturing processes adopt a forging method or a casting method, metal raw materials are melted at high temperature to be made into blanks, and then the blanks are machined into required shapes and dimensions of metal parts through machine equipment, but the parts of every nook and corner in the special-shaped structure of some metal parts are inconvenient to machine and even cannot be machined. Meanwhile, the problems of complex process, multiple devices, high temperature danger in the manufacturing process, waste material generated in processing, frequent industrial accidents and the like exist.

In view of the above, the invention scientifically designs a protection device and a protection method for a primary finished product process of an automobile electromagnetic damping part, so as to avoid the above undesirable problems. However, with the improvement of the quality requirement of the automobile electromagnetic damping part product, I find that the automobile electromagnetic damping part product can be subjected to oxidation reaction with oxygen in the air to decarbonize in the high-temperature sintering process, so that the performance of the automobile electromagnetic damping part product is affected.

To solve the new problem, the invention scientifically designs a novel nitrogen-filled high-temperature sintering furnace device, and utilizes a protection method of exhausting oxygen by filling nitrogen to avoid oxidation and decarburization when the sintering dew point is ensured to reach more than 60. Therefore, the performance of the automobile electromagnetic damping part product is improved, the hardness of the sintered automobile electromagnetic damping part product can reach 90-95HRB, and the single-tooth breaking strength can reach 450 Mp. Meanwhile, high hardness quality can be achieved without steam treatment, and the exhaust gas emission of the steam treatment is reduced.

Disclosure of Invention

The invention aims to solve the technical problem that a protection device and a method for a one-step finished product process of an automobile electromagnetic damping part are scientifically designed, and the one-step manufacture from raw materials to finished products is realized by a series of process flows of prefabricating a mould, preparing raw materials, performing high-pressure one-step forming, filling nitrogen into a sintering furnace for high-temperature sintering, rapidly cooling by air, rolling and polishing, plating, inspecting and packaging; the processing procedures such as drilling, slotting and the like of the traditional machine are omitted, and the process difficulty that the traditional metal part processing is inconvenient to operate and even cannot be operated is solved at one time; the method has the advantages of safety, high efficiency, simple process, high precision, low defective rate and cost reduction, and the manufactured finished product has better physical and chemical properties such as hardness, density, smoothness, wear resistance, corrosion resistance and the like than metal pieces sintered by a common sintering furnace.

The technical scheme adopted by the invention for solving the technical problems is as follows: a protection device and a method for a primary finished product process of an automobile electromagnetic damping part comprise the steps of manufacturing a mold, preparing raw materials, high-pressure forming, high-temperature sintering in a nitrogen-filled sintering furnace, rapid air cooling, rolling polishing, plating, inspecting and packaging;

firstly, a plurality of sets of manufacturing dies for compression molding are manufactured according to the shape and the size of the electromagnetic damping part product of the automobile to be manufactured;

further, according to the components of the electromagnetic damping part product of the automobile to be manufactured, the metal powder raw material, the metal semi-fluid raw material and the metal liquid raw material are proportioned and stirred uniformly according to the proportion to prepare the preparation raw material;

further, filling the preparation raw materials into the manufacturing mold, and completing the high-pressure molding through high-pressure equipment;

further, conveying the high-pressure formed semi-finished product into the nitrogen-filled sintering furnace for high-temperature sintering;

further, instantly air-cooling the semi-finished product sintered at high temperature in the nitrogen-filled sintering furnace to finish the quick air-cooling process operation;

further, the semi-finished product after the quick air cooling is placed into rolling polishing equipment for rolling polishing, so that the surface of the semi-finished product is smooth and clean after rolling friction;

further, the semi-finished product after the rolling polishing is subjected to the plating to form a finished product;

further, the finished products after being plated are subjected to one-by-one inspection, and defective products are removed;

further, the inspected finished product is packaged;

a series of process flows of the primary finished product of the electromagnetic damping part of the automobile are formed.

The high-temperature sintering of the nitrogen-filled sintering furnace comprises the operations of the nitrogen-filled sintering furnace, a product frame and a high-temperature sintering process;

the nitrogen-filled sintering furnace is arranged as a cuboid cabinet and comprises a bottom surface, two lateral surfaces which are symmetrical left and right, and two lateral surfaces which are symmetrical front and back;

heating devices are fixedly arranged on the inner sides of six sides of the nitrogen-filled sintering furnace, a nitrogen-filled cover is fixedly and hermetically arranged on the upper part of the top surface of the nitrogen-filled sintering furnace, and a plurality of vent valves which are through up and down are fixedly arranged on the top surface of the nitrogen-filled sintering furnace; the left and right symmetrical side surfaces of the nitrogen-filled sintering furnace are provided with lifting doors which can move up and down at two ends of the top surface of the nitrogen-filled sintering furnace, and a pair of parallel rails is fixedly arranged on the bottom surface of the nitrogen-filled sintering furnace in the left and right directions.

The product frame is a cuboid frame slightly smaller than the internal size of the nitrogen-filled sintering furnace, and the bottom of the product frame is fixedly provided with a roller device, so that the product frame just rolls on the pair of parallel rails to run.

The high-temperature sintering process comprises the following steps:

lifting the lifting doors on the left side and the right side of the nitrogen-filled sintering furnace;

pushing the product rack with the automobile electromagnetic damping part products placed in the product rack into the nitrogen-filled sintering furnace from the pair of parallel rails for fixing;

opening the ventilation valve while slowly lowering the lifting doors at the left side and the right side, and filling nitrogen into the nitrogen-filled sintering furnace at high pressure through the nitrogen-filled cover;

the lifting doors on the left side and the right side fall completely and are sealed with the bottom surface of the nitrogen-filled sintering furnace in a closed manner;

closing all the vent valves on the top surface of the nitrogen-filled sintering furnace;

and starting the heating devices fixedly arranged on the inner sides of six surfaces of the nitrogen-filled sintering furnace to perform high-temperature sintering.

The automobile electromagnetic damping part comprises an annular base, a thin edge, a thick edge and a positioning clamp projection, wherein the thin edge and the thick edge are uniformly and fixedly arranged on the peripheral edge of the annular base at intervals respectively, the positioning clamp projection is in a fan-shaped layout from the inner edge of the annular base to the thick edge and protrudes towards one surface of the thick edge in a flat-head conical shape, so that a special-shaped body is formed, and the difficulty is caused to the traditional machining process; because the automobile parts have high requirements on precision and strength, the automobile parts are a technical problem which cannot be finished by the traditional machining process; the invention relates to a protection device and a method for a one-time finished product process of an automobile electromagnetic damping part, which achieve one-time manufacture from raw materials to finished products by a series of process flows of prefabricating a die, preparing raw materials, high-pressure one-time forming, high-temperature sintering in a nitrogen-filled sintering furnace, rapid air cooling, rolling polishing, plating, inspecting, packaging and the like, thereby avoiding the traditional machining process flows of drilling holes, slotting and the like by a machine; meanwhile, the method has the beneficial effects of safety, high efficiency, simple process, high precision, low defective rate and cost reduction, and the manufactured finished product has better physical and chemical properties such as hardness, density, smoothness, wear resistance, corrosion resistance and the like than metal pieces sintered by a common sintering furnace.

Drawings

FIG. 1 is a schematic view of the overall process flow of the present invention;

FIG. 2 is a schematic front perspective view of the nitrogen-filled sintering furnace and the product shelf of the present invention in an operating state;

FIG. 3 is a schematic view of the overall structure of the electromagnetic damping part product for the automobile of the invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.