CN113512696A - Lock rod zinc impregnation process - Google Patents
Lock rod zinc impregnation process Download PDFInfo
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- CN113512696A CN113512696A CN202110777129.3A CN202110777129A CN113512696A CN 113512696 A CN113512696 A CN 113512696A CN 202110777129 A CN202110777129 A CN 202110777129A CN 113512696 A CN113512696 A CN 113512696A
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- zinc
- zincizing
- zinc impregnation
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 60
- 239000011701 zinc Substances 0.000 title claims abstract description 60
- 238000005470 impregnation Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000843 powder Substances 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000011261 inert gas Substances 0.000 claims abstract description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 238000012216 screening Methods 0.000 claims abstract description 9
- 238000011049 filling Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 28
- 239000006004 Quartz sand Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 235000019270 ammonium chloride Nutrition 0.000 claims description 14
- 239000000395 magnesium oxide Substances 0.000 claims description 13
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 13
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 13
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 11
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 11
- -1 rare earth cerium oxide Chemical class 0.000 claims description 11
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 11
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 11
- 238000005422 blasting Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims 2
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 7
- 230000008595 infiltration Effects 0.000 description 6
- 238000001764 infiltration Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000005246 galvanizing Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- GZYDURDOJBZORN-UHFFFAOYSA-K cerium(3+) dodecyl sulfate Chemical compound S(=O)(=O)(OCCCCCCCCCCCC)[O-].[Ce+3].C(CCCCCCCCCCC)OS(=O)(=O)[O-].C(CCCCCCCCCCC)OS(=O)(=O)[O-] GZYDURDOJBZORN-UHFFFAOYSA-K 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/02—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/60—After-treatment
Abstract
The invention discloses a lock rod zinc impregnation process, which comprises the following steps: s1, workpiece pretreatment: sequentially carrying out oil removal, rust removal, water washing and drying treatment on the surface of the lock rod to be treated; s2, charging: feeding the pretreated workpiece into a rotary furnace, mixing the workpiece with zinc impregnation powder, and filling inert gas; s3, cooling: naturally cooling the workpiece in the zincizing furnace to 90-100 ℃, opening the rotary furnace and screening the contents while the contents are hot to obtain the workpiece after zincizing; and S4, washing, passivating, cleaning and drying the workpiece subjected to zinc impregnation in sequence to obtain a finished workpiece. The zincizing treatment process provided by the invention has the advantages of simple process, safety, easy operation, low production cost, excellent corrosion resistance of the obtained workpiece, complete conformity with the standard, capability of being applied to the surface zincizing treatment of the lock rod in a large quantity and higher economic value.
Description
Technical Field
The invention relates to the technical field of metal surface treatment, in particular to a locking rod zinc impregnation process.
Background
The lock rod is a hardware component for door lock, for example, a door for loading and unloading goods on a transport container, and four lock rods are generally installed on a door plate and locked by fasteners. In order to provide the lock rod with excellent corrosion resistance and prolong the service life of the lock rod, the surface of the lock rod is usually subjected to zinc impregnation treatment.
Compared with other metals, zinc is a relatively cheap and easily plated metal, and is widely used for protecting steel parts, and zinc impregnation methods include electrogalvanizing, hot-dip galvanizing, powder zinc impregnation and the like. Electrogalvanizing (cold galvanizing) is a process of forming a uniform, compact and well-combined zinc coating on the surface of a workpiece by utilizing an electrolysis principle, but the electrogalvanizing increases labor and cost. In hot dip galvanizing, a workpiece is immersed in a molten zinc bath, and a zinc alloy plating layer having good adhesion is applied to the surface by reaction and diffusion between iron and zinc. However, high temperatures during hot dip galvanizing operations can reduce the mechanical strength.
Powder zincing is the most commonly used, in which a zincing agent and a workpiece are placed in a zincing furnace together and heated to about 400 ℃, active zinc atoms permeate from the outer surface to the inner surface of the workpiece, iron atoms diffuse from the inner surface to the outer surface of the workpiece, a uniform zincing layer of a zinc-iron compound is formed on the surface layer of the workpiece, and after the zincing layer is passivated, a silvery white passivation film is formed on the surface of the zincing layer, so that the corrosion resistance of a coating can be improved.
However, the existing powder zinc impregnation treatment process has the disadvantages of complicated procedures, high energy consumption, environmental pollution and potential safety hazard. Therefore, the invention provides a brand-new lock rod zinc impregnation process to solve the problems.
Disclosure of Invention
The invention aims to provide a locking rod zinc impregnation process aiming at the defects in the prior art and solves the problems of complicated process, high energy consumption, environmental pollution and potential safety hazard in the conventional powder zinc impregnation treatment process.
The invention pretreats the workpiece to remove impurities and oxide films on the surface of the metal workpiece, so that the surface of the workpiece is smoother and better subjected to zinc impregnation; zinc powder, quartz sand and ammonium chloride are selected as the zincizing agent and are matched with other auxiliary agents, so that the uniformity of a coating in the zincizing process and the heat infiltration stability can be greatly improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a lock rod zinc impregnation process comprises the following steps:
s1, workpiece pretreatment: sequentially carrying out oil removal, rust removal, water washing and drying treatment on the surface of the lock rod to be treated;
s2, charging: feeding the pretreated workpiece into a rotary furnace, mixing the workpiece with zinc impregnation powder, and filling inert gas;
s3, cooling: naturally cooling the workpiece in the zincizing furnace to 90-100 ℃, opening the rotary furnace and screening the contents while the contents are hot to obtain the workpiece after zincizing;
and S4, washing, passivating, cleaning and drying the workpiece subjected to zinc impregnation in sequence to obtain a finished workpiece.
The invention pretreats the workpiece to remove impurities and oxide films on the surface of the metal workpiece, so that the surface of the workpiece is smoother and better subjected to zinc impregnation; the zinc powder, the quartz sand and the ammonium chloride with proper proportion are selected as the zinc impregnation agent, and the rare earth cerium oxide, the sodium lauryl sulfate and the magnesium oxide are matched, so that the advantages of the zinc impregnation agent are fully exerted, the zinc impregnation agent, the cerium lauryl sulfate, the magnesium oxide and the magnesium oxide complement each other, the mutual promotion is realized, the use types of raw materials are reduced, the raw material cost is optimized, the occurrence probability of the problems of uneven mixing and blending caused by various raw materials is reduced, the uniformity and the heat infiltration stability of a coating layer in the zinc impregnation process can be greatly improved, and the lock rod after the zinc impregnation treatment has excellent corrosion resistance and long service life; inert gas is filled in the zinc impregnation treatment process, so that the zinc powder is not oxidized, the safety of the process is ensured, and the environment is not polluted; after the zincification is finished, the rotary furnace is cooled to 90-100 ℃, screening is carried out while the rotary furnace is hot, so that the zinc powder can be prevented from being bonded on the surface of a workpiece after being completely cooled, and the corrosion resistance of the zincification layer is further improved through cleaning and passivation treatment.
Preferably, in step S1, the lock rod to be processed is placed in a 300-; and (4) putting the workpiece subjected to high-temperature oil removal into a shot blasting machine to perform impact on the surface of the workpiece for rust removal.
Preferably, in step S2, the zinc infiltration powder is composed of the following components in parts by mass: 40-50 parts of zinc powder, 50-60 parts of quartz sand, 6-10 parts of ammonium chloride, 4-7 parts of rare earth cerium oxide, 1-2 parts of sodium lauryl sulfate and 1-2 parts of magnesium oxide.
Preferably, in step S2, the zinc infiltration powder is composed of the following components in parts by mass: 45 parts of zinc powder, 55 parts of quartz sand, 8 parts of ammonium chloride, 5 parts of rare earth cerium oxide, 1.5 parts of sodium lauryl sulfate and 1.5 parts of magnesium oxide.
Preferably, the granularity of the zinc powder is 200 meshes, and the granularity of the quartz sand is 40-60 meshes.
Preferably, in step S2, the workpiece and the zinc impregnation powder are mixed and filled with inert gas, then the rotary furnace is heated to 350-450 ℃, and the temperature is kept for 3-5 h.
Preferably, the rotating speed of the rotating furnace in the step S2 is 30-35 r/min.
Compared with the prior art, the invention has the beneficial effects that:
1. after the workpiece is subjected to oil removal, rust removal and activity treatment, the workpiece, zinc powder and an inert impact medium are mixed and filled in a sealed rotary furnace, the rotary furnace is heated to 350-450 ℃ and is kept warm for a period of time, and a Zn-Fe alloy protective coating is formed on the surface of the workpiece by utilizing the thermal diffusion effect of metal atoms. The inert gas can ensure that the zinc powder is not oxidized and the safety of the process is ensured, and the environment is not polluted.
2. When the invention is used for the zinc impregnation treatment, the zinc impregnation treatment is carried out on the lock rod by combining the zinc impregnation powder obtained by the research of the inventor, so that the corrosion resistance effect of the lock rod prepared by the invention can be further improved.
3. The zinc impregnation powder is prepared by selecting raw materials, optimizing the content of each raw material, selecting zinc powder, quartz sand and ammonium chloride with proper proportion as a zinc impregnation agent, and matching rare earth cerium oxide, sodium lauryl sulfate and magnesium oxide, not only fully playing respective advantages, but also complementing each other, promoting each other, reducing the use types of the raw materials, optimizing the cost of the raw materials, reducing the occurrence probability of the problems of uneven mixing and blending caused by various types of the raw materials, greatly improving the uniformity and the heat infiltration stability of a coating layer in the zinc impregnation process, and ensuring that a lock rod after zinc impregnation treatment has excellent corrosion resistance and long service life.
4. After the zinc impregnation is finished, the rotary furnace is cooled to 90-100 ℃, screening is carried out while the rotary furnace is hot, the zinc powder can be prevented from being bonded on the surface of a workpiece after being completely cooled, and the corrosion resistance of a zinc impregnation layer is further improved through cleaning and passivation treatment.
5. The method has the advantages of simple process, safety, easy operation, low production cost, excellent product performance and higher economic value.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The test methods or test methods described in the following examples are conventional methods unless otherwise specified; the reagents and materials, unless otherwise indicated, are conventionally obtained commercially or prepared by conventional methods.
Example 1
The embodiment provides a locking rod zinc impregnation process, which comprises the following steps:
s1, workpiece pretreatment: the locking rod to be treated is placed in a 300-400 ℃ high-temperature curing furnace, and the surface of the workpiece is deoiled in a high-temperature environment; putting the workpiece subjected to high-temperature oil removal into a shot blasting machine to perform impact on the surface of the workpiece for rust removal; then washing and drying;
s2, charging: feeding the pretreated workpiece into a rotary furnace, mixing the workpiece with zinc impregnation powder, filling inert gas, heating the rotary furnace to 350-450 ℃, preserving heat, and standing for 3-5h, wherein the rotation speed of the rotary furnace is 30-35 r/min;
s3, cooling: naturally cooling the workpiece in the zincizing furnace to 90-100 ℃, opening the rotary furnace and screening the contents while the contents are hot to obtain the workpiece after zincizing;
and S4, washing, passivating, cleaning and drying the workpiece subjected to zinc impregnation in sequence to obtain a finished workpiece.
In this embodiment, the zinc-infiltrated powder is composed of the following components in parts by mass: 40-50 parts of 200-mesh zinc powder, 50-60 parts of 40-60-mesh quartz sand, 6-10 parts of ammonium chloride, 4-7 parts of rare earth cerium oxide, 1-2 parts of sodium lauryl sulfate and 1-2 parts of magnesium oxide.
Example 2
The embodiment provides a locking rod zinc impregnation process, which comprises the following steps:
s1, workpiece pretreatment: putting the lock rod to be treated into a 300 ℃ high-temperature curing furnace, and removing oil on the surface of the workpiece in a high-temperature environment; putting the workpiece subjected to high-temperature oil removal into a shot blasting machine to perform impact on the surface of the workpiece for rust removal; then washing and drying;
s2, charging: feeding the pretreated workpiece into a rotary furnace, mixing the workpiece with zinc impregnation powder, filling inert gas, heating the rotary furnace to 350 ℃, preserving heat and standing for 3 hours, wherein the rotation speed of the rotary furnace is 30 r/min;
s3, cooling: naturally cooling the workpiece in the zincizing furnace to 90 ℃, opening the rotary furnace and screening the contents while the contents are hot to obtain the workpiece after zincizing;
and S4, washing, passivating, cleaning and drying the workpiece subjected to zinc impregnation in sequence to obtain a finished workpiece.
In this embodiment, the zinc-infiltrated powder is composed of the following components in parts by mass: 40 parts of 200-mesh zinc powder, 50 parts of 40-mesh quartz sand, 6 parts of ammonium chloride, 4 parts of rare earth cerium oxide, 1 part of sodium lauryl sulfate and 1 part of magnesium oxide.
Example 3
The embodiment provides a locking rod zinc impregnation process, which comprises the following steps:
s1, workpiece pretreatment: putting the lock rod to be treated into a high-temperature curing furnace at 350 ℃, and removing oil on the surface of the workpiece in a high-temperature environment; putting the workpiece subjected to high-temperature oil removal into a shot blasting machine to perform impact on the surface of the workpiece for rust removal; then washing and drying;
s2, charging: feeding the pretreated workpiece into a rotary furnace, mixing the workpiece with zinc impregnation powder, filling inert gas, heating the rotary furnace to 400 ℃, preserving heat and standing for 4 hours, wherein the rotating speed of the rotary furnace is 32 r/min;
s3, cooling: naturally cooling the workpiece in the zincizing furnace to 95 ℃, opening the rotary furnace and screening the contents while the contents are hot to obtain the workpiece after zincizing;
and S4, washing, passivating, cleaning and drying the workpiece subjected to zinc impregnation in sequence to obtain a finished workpiece.
In this embodiment, the zinc-infiltrated powder is composed of the following components in parts by mass: 45 parts of 200-mesh zinc powder, 55 parts of 50-mesh quartz sand, 8 parts of ammonium chloride, 5 parts of rare earth cerium oxide, 1.5 parts of sodium lauryl sulfate and 1.5 parts of magnesium oxide.
Example 4
The embodiment provides a locking rod zinc impregnation process, which comprises the following steps:
s1, workpiece pretreatment: putting the lock rod to be treated into a high-temperature curing furnace at 400 ℃, and removing oil on the surface of the workpiece in a high-temperature environment; putting the workpiece subjected to high-temperature oil removal into a shot blasting machine to perform impact on the surface of the workpiece for rust removal; then washing and drying;
s2, charging: feeding the pretreated workpiece into a rotary furnace, mixing the workpiece with zinc impregnation powder, filling inert gas, heating the rotary furnace to 450 ℃, preserving heat and standing for 5 hours, wherein the rotation speed of the rotary furnace is 35 r/min;
s3, cooling: naturally cooling the workpiece in the zincizing furnace to 100 ℃, opening the rotary furnace and screening the contents while the contents are hot to obtain the workpiece after zincizing;
and S4, washing, passivating, cleaning and drying the workpiece subjected to zinc impregnation in sequence to obtain a finished workpiece.
In this embodiment, the zinc-infiltrated powder is composed of the following components in parts by mass: 50 parts of 200-mesh zinc powder, 60 parts of 60-mesh quartz sand, 10 parts of ammonium chloride, 7 parts of rare earth cerium oxide, 2 parts of sodium lauryl sulfate and 2 parts of magnesium oxide.
The salt spray test was performed on the samples of the workpieces obtained in the examples 2 to 4 of the present invention:
in conclusion, the zincizing powder provided by the invention is prepared by selecting raw materials, optimizing the content of each raw material, selecting zinc powder, quartz sand and ammonium chloride with proper proportion as a zincizing agent, and matching rare earth cerium oxide, sodium lauryl sulfate and magnesium oxide, so that the advantages of the zinc powder, the quartz sand and the ammonium chloride are fully exerted, the zinc powder, the quartz sand and the ammonium chloride are mutually complemented and promoted, the use types of the raw materials are reduced, the raw material cost is optimized, the occurrence probability of the problems of uneven mixing and blending caused by various raw materials is reduced, the uniformity and the heat infiltration stability of a coating layer in the zincizing process can be greatly improved, and the locking rod after the zincizing treatment has excellent corrosion resistance and long service life. The zinc impregnation treatment process is matched, so that the process is simple, safe and easy to operate, the production cost is low, the standard is met, and the application prospect is wide.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The locking rod zinc impregnation process is characterized by comprising the following steps:
s1, workpiece pretreatment: sequentially carrying out oil removal, rust removal, water washing and drying treatment on the surface of the lock rod to be treated;
s2, charging: feeding the pretreated workpiece into a rotary furnace, mixing the workpiece with zinc impregnation powder, and filling inert gas;
s3, cooling: naturally cooling the workpiece in the zincizing furnace to 90-100 ℃, opening the rotary furnace and screening the contents while the contents are hot to obtain the workpiece after zincizing;
and S4, washing, passivating, cleaning and drying the workpiece subjected to zinc impregnation in sequence to obtain a finished workpiece.
2. The lock rod zincizing process according to claim 1, wherein in step S1, the lock rod to be processed is placed in a 300-400 ℃ high temperature curing furnace, and the surface of the workpiece is degreased in a high temperature environment; and (4) putting the workpiece subjected to high-temperature oil removal into a shot blasting machine to perform impact on the surface of the workpiece for rust removal.
3. The lock rod zinc impregnation process of claim 1, wherein in step S2, the zinc impregnation powder comprises the following components in parts by mass: 40-50 parts of zinc powder, 50-60 parts of quartz sand, 6-10 parts of ammonium chloride, 4-7 parts of rare earth cerium oxide, 1-2 parts of sodium lauryl sulfate and 1-2 parts of magnesium oxide.
4. The lock rod zinc impregnation process of claim 3, wherein in step S2, the zinc impregnation powder comprises the following components in parts by mass: 45 parts of zinc powder, 55 parts of quartz sand, 8 parts of ammonium chloride, 5 parts of rare earth cerium oxide, 1.5 parts of sodium lauryl sulfate and 1.5 parts of magnesium oxide.
5. The locking rod zincizing process of claim 4, wherein the particle size of the zinc powder is 200 meshes, and the particle size of the quartz sand is 40-60 meshes.
6. The locking rod zincizing process according to claim 5, wherein in step S2, the workpiece and the zincizing powder are mixed and filled with inert gas, and then the rotary furnace is heated to 350 ℃ -450 ℃, and is kept warm for 3-5 h.
7. The lock rod zincizing process according to claim 6, wherein the rotation speed of the rotary furnace in the step S2 is 30-35 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110777129.3A CN113512696A (en) | 2021-07-09 | 2021-07-09 | Lock rod zinc impregnation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110777129.3A CN113512696A (en) | 2021-07-09 | 2021-07-09 | Lock rod zinc impregnation process |
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| Publication Number | Publication Date |
|---|---|
| CN113512696A true CN113512696A (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110777129.3A Pending CN113512696A (en) | 2021-07-09 | 2021-07-09 | Lock rod zinc impregnation process |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3485685A (en) * | 1967-05-31 | 1969-12-23 | Bell Telephone Labor Inc | Method and source composition for reproducible diffusion of zinc into gallium arsenide |
| CN111876723A (en) * | 2020-08-11 | 2020-11-03 | 盐城科奥机械有限公司 | Zinc impregnation method and anti-corrosion metal part |
| CN112680694A (en) * | 2020-12-10 | 2021-04-20 | 杭州宏特粉沫镀锌有限公司 | Powder zinc impregnation process |
-
2021
- 2021-07-09 CN CN202110777129.3A patent/CN113512696A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3485685A (en) * | 1967-05-31 | 1969-12-23 | Bell Telephone Labor Inc | Method and source composition for reproducible diffusion of zinc into gallium arsenide |
| CN111876723A (en) * | 2020-08-11 | 2020-11-03 | 盐城科奥机械有限公司 | Zinc impregnation method and anti-corrosion metal part |
| CN112680694A (en) * | 2020-12-10 | 2021-04-20 | 杭州宏特粉沫镀锌有限公司 | Powder zinc impregnation process |
Non-Patent Citations (2)
| Title |
|---|
| 张松琦等: "铁路扣件弹条通道式渗锌处理工艺研究", 《铁道建筑》 * |
| 陈振发: "《粉末涂料涂装工艺学》", 上海科学技术文献出版社 * |
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Application publication date: 20211019 |