阅读说明：本技术 一种工件蒸汽处理工艺 (Workpiece steam treatment process ) 是由 孙希波 魏新杰 郑维彬 梁超 于 2021-08-18 设计创作，主要内容包括：本发明涉及一种工件蒸汽处理工艺,包括以下工艺步骤：步骤一：预热,此步骤中向蒸汽处理炉的炉胆内通入氮气,不向通入蒸气；步骤二：升温,此步骤中蒸汽处理炉的向炉胆内通入氮气,不通入蒸气；步骤三：氧化,此步骤中向蒸汽处理炉的炉胆内通入蒸气,不通入氮气；步骤四：预冷,此步骤中向蒸汽处理炉的炉胆内通入氮气,不通入蒸气；步骤五：出炉,此步骤中向蒸汽处理炉的炉胆内通入氮气,不向蒸汽处理炉的炉胆内通入蒸气；通过预热、升温、氧化、预冷、出炉一系列工艺步骤,实现了对工件的蒸汽处理,工件表面的氧化层的深度能够得到有效保证,确保了工件的防锈性能和耐磨性能。(The invention relates to a workpiece steam treatment process, which comprises the following process steps: the method comprises the following steps: preheating, wherein nitrogen is introduced into a furnace pipe of the steam treatment furnace in the step, and steam is not introduced; step two: heating, wherein in the step, nitrogen is introduced into the furnace pipe of the steam treatment furnace, and steam is not introduced; step three: oxidizing, wherein steam is introduced into a furnace pipe of the steam treatment furnace in the step, and nitrogen is not introduced; step four: precooling, wherein nitrogen is introduced into a furnace pipe of the steam treatment furnace in the step, and steam is not introduced; step five: discharging, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace; through a series of process steps of preheating, heating, oxidizing, precooling and discharging, the steam treatment of the workpiece is realized, the depth of an oxide layer on the surface of the workpiece can be effectively ensured, and the antirust performance and the wear-resisting performance of the workpiece are ensured.)

1. A workpiece steam treatment process is characterized by comprising the following process steps:

the method comprises the following steps: preheating, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace;

step two: heating, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace;

step three: oxidizing, wherein steam is introduced into the furnace pipe of the steam treatment furnace in the step, and nitrogen is not introduced into the furnace pipe of the steam treatment furnace;

step four: precooling, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace;

step five: and discharging, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace.

2. The workpiece vapor treatment process of claim 1, wherein in the first step, the temperature in the furnace is controlled to be 360 ℃ to 415 ℃.

3. The steam treatment process for workpieces as claimed in claim 1, wherein in step two, the temperature in the furnace is controlled to be 460 ℃ to 515 ℃.

4. The steam treatment process for workpieces as claimed in claim 1, characterized in that the temperature in the furnace pipe in step three is controlled to be 580 ℃ -625 ℃.

5. The steam treatment process for workpieces as claimed in claim 1, characterized in that the temperature in the furnace pipe in step four is controlled to be 480 ℃ -515 ℃.

6. The steam treatment process for workpieces as claimed in claim 1, characterized in that, in step five, the temperature in the furnace is controlled to be 55-85 ℃.

7. The workpiece vapor treatment process of claim 1, wherein the step one duration is 60-85 minutes.

8. The workpiece vapor treatment process of claim 1, wherein the duration of step two is 90-115 minutes.

9. The workpiece vapor treatment process of claim 1, wherein the duration of step three is 105-.

10. The workpiece vapor treatment process of claim 1, wherein the duration of step four is 25-55 minutes and the duration of step five is 7-21 minutes.

Technical Field

The invention relates to a workpiece steam treatment process.

Background

The steam treatment of the workpiece can be used for improving the antirust property and the wear resistance of the iron-based powder metallurgy product, and the steam treatment process has the advantages of uniform oxidation film, good compactness, good surface antirust property, high wear resistance and the like after the steam treatment process is used for treating the product. The disadvantage of an oxide layer with an unsatisfactory depth still remains.

Disclosure of Invention

The invention aims to solve the technical problem of providing a workpiece steam treatment process which can effectively ensure the depth of an oxide layer and the antirust performance and the wear resistance of a workpiece.

In order to solve the technical problems, the technical scheme of the invention is as follows: a workpiece vapor treatment process comprising the process steps of:

the method comprises the following steps: preheating, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace;

step two: heating, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace;

step three: oxidizing, wherein steam is introduced into the furnace pipe of the steam treatment furnace in the step, and nitrogen is not introduced into the furnace pipe of the steam treatment furnace;

step four: precooling, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace;

step five: and discharging, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace.

As a preferred technical scheme, the temperature in the furnace pipe in the step one is controlled to be 360-415 ℃.

As a preferred technical scheme, the temperature in the furnace pipe in the step two is controlled to be 460-515 ℃.

As a preferred technical scheme, the temperature in the furnace pipe in the third step is controlled to be 580-625 ℃.

As a preferable technical scheme, the temperature in the furnace pipe in the fourth step is controlled to be 480-515 ℃.

As a preferred technical scheme, in the fifth step, the temperature in the furnace pipe is controlled to be 55-85 ℃.

As a preferred embodiment, the duration of step one is 60 to 85 minutes.

As a preferred technical scheme, the duration of the second step is 90-115 minutes.

As a preferred embodiment, the duration of step three is 105-135 minutes.

As a preferred technical scheme, the duration of the step four is 25-55 minutes, and the duration of the step five is 7-21 minutes.

Due to the adoption of the technical scheme, the workpiece steam treatment process comprises the following process steps: the method comprises the following steps: preheating, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace; step two: heating, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace; step three: oxidizing, wherein steam is introduced into the furnace pipe of the steam treatment furnace in the step, and nitrogen is not introduced into the furnace pipe of the steam treatment furnace; step four: precooling, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace; step five: discharging, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace; through a series of process steps of preheating, heating, oxidizing, precooling and discharging, the steam treatment of the workpiece is realized, the depth of an oxide layer on the surface of the workpiece can be effectively ensured, and the antirust performance and the wear-resisting performance of the workpiece are ensured.

Detailed Description

A workpiece vapor treatment process comprising the process steps of:

the method comprises the following steps: preheating, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace;

step two: heating, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace;

step three: oxidizing, wherein steam is introduced into the furnace pipe of the steam treatment furnace in the step, and nitrogen is not introduced into the furnace pipe of the steam treatment furnace;

step four: precooling, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace;

step five: and discharging, wherein nitrogen is introduced into the furnace pipe of the steam treatment furnace in the step, and steam is not introduced into the furnace pipe of the steam treatment furnace.

Through a series of process steps of preheating, heating, oxidizing, precooling and discharging, the steam treatment of the workpiece is realized, the depth of an oxide layer on the surface of the workpiece can be effectively ensured, and the antirust performance and the wear-resisting performance of the workpiece are ensured.

Preferably, the temperature in the furnace pipe in the first step is controlled to be 360-415 ℃.

Preferably, the temperature in the furnace pipe in the second step is controlled to be 460-515 ℃.

Preferably, the temperature in the furnace pipe in the third step is controlled to be 580-625 ℃.

Preferably, the temperature in the furnace pipe in the fourth step is controlled to be 480-515 ℃.

Preferably, in the fifth step, the temperature in the furnace pipe is controlled to be 55-85 ℃.

Preferably, the duration of step one is 60 to 85 minutes.

Preferably, the duration of step two is 90 to 115 minutes.

Preferably, the duration of step three is 105- & ltwbr & gt 135 minutes.

Preferably, the duration of step four is 25 to 55 minutes and the duration of step five is 7 to 21 minutes.

The first embodiment is as follows:

the temperature in the furnace in the first step is controlled at 360 ℃, the temperature in the furnace in the second step is controlled at 460 ℃, the temperature in the furnace in the third step is controlled at 580 ℃, the temperature in the furnace in the fourth step is controlled at 480 ℃, and the temperature in the furnace in the fifth step is controlled at 55 ℃; the duration of step one is 60 minutes, the duration of step two is 90 minutes, the duration of step three is 105 minutes, the duration of step four is 25 minutes, and the duration of step five is 7 minutes; the depth of the oxide layer was 0.023 mm.

Example two:

controlling the temperature in the furnace in the first step to be 415 ℃, controlling the temperature in the furnace in the second step to be 515 ℃, controlling the temperature in the furnace in the third step to be 625 ℃, controlling the temperature in the furnace in the fourth step to be 515 ℃ and controlling the temperature in the furnace in the fifth step to be 85 ℃; the duration of step one is 85 minutes, the duration of step two is 115 minutes, the duration of step three is 135 minutes, the duration of step four is 55 minutes, and the duration of step five is 21 minutes; the depth of the oxide layer was 0.022 mm.

Example three:

controlling the temperature in the furnace pipe at 390 ℃ in the first step, controlling the temperature in the furnace pipe at 495 ℃ in the second step, controlling the temperature in the furnace pipe at 610 ℃ in the third step, controlling the temperature in the furnace pipe at 490 ℃ in the fourth step and controlling the temperature in the furnace pipe at 75 ℃ in the fifth step; the duration of step one is 75 minutes, the duration of step two is 95 minutes, the duration of step three is 127 minutes, the duration of step four is 30 minutes, and the duration of step five is 15 minutes; the depth of the oxide layer was 0.025 mm.

Example four:

the temperature in the furnace in the first step is controlled to be 400 ℃, the temperature in the furnace in the second step is controlled to be 485 ℃, the temperature in the furnace in the third step is controlled to be 590 ℃, the temperature in the furnace in the fourth step is controlled to be 505 ℃, and the temperature in the furnace in the fifth step is controlled to be 65 ℃; the duration of step one is 70 minutes, the duration of step two is 105 minutes, the duration of step three is 120 minutes, the duration of step four is 45 minutes, and the duration of step five is 20 minutes; the depth of the oxide layer is 0.026 mm.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.