CN111020436B - Support strip and hot-dip galvanizing production process for processing same - Google Patents

Support strip and hot-dip galvanizing production process for processing same Download PDF

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Publication number
CN111020436B
CN111020436B CN201911316772.5A CN201911316772A CN111020436B CN 111020436 B CN111020436 B CN 111020436B CN 201911316772 A CN201911316772 A CN 201911316772A CN 111020436 B CN111020436 B CN 111020436B
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support bar
support
supporting body
hot
production process
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CN201911316772.5A
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CN111020436A (en
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龚涛华
周建敏
孙喜强
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SUZHOU TAIHENG MECHANICAL-ELECTRICAL PARTS CO LTD
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SUZHOU TAIHENG MECHANICAL-ELECTRICAL PARTS CO LTD
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    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Thermal Sciences (AREA)
  • Coating With Molten Metal (AREA)

Abstract

The invention discloses a support bar and a hot-dip galvanizing production process for processing the same. The support strip is bent to form the upper support body and the lower support body, the open end of the lower support body is embedded and fixed with the upper support body through the caulking groove, the interior of the formed support strip is of a hollow structure, the weight of the support strip can be greatly reduced, the support strip can bear larger transverse and longitudinal supporting force under the combined action of the upper support body and the lower support body, the bending resistance strength is high, and a zinc-iron alloy layer with a stable structure can be formed on the surface of the support strip produced by the hot-dip galvanizing production process for processing the support strip and is not easy to fall off.

Description

Support strip and hot-dip galvanizing production process for processing same
Technical Field
The invention belongs to the technical field of support bars, and particularly relates to a support bar and a hot-dip galvanizing production process for processing the same.
Background
In the production process of the elevator, the supporting strips are needed to be used for installing and fixing structures in the elevator, such as parts of a car plate or a ceiling. At present, adopt L shaped steel or channel-section steel directly to use as the support bar usually, L shaped steel or channel-section steel dead weight are great, and L shaped steel or channel-section steel use when the elevator for a long time, because the inside wet cold of elevartor shaft makes L shaped steel or channel-section steel appear rusty condition easily, influence the firm degree of support to the car.
Disclosure of Invention
The invention aims to provide a support strip and a hot-dip galvanizing production process for processing the same so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a support bar, last supporter and the under bracing body that sets up including the integration, go up supporter and under bracing body through bending type, the section of going up the supporter is flat rectangle, the under bracing body is equipped with two, the section of under bracing body is the square, it is equipped with the caulking groove that is used for blocking the under bracing body tip to go up supporter lower surface both ends.
Preferably, the width of the upper supporter is the same as the sum of the widths of the two lower supporters.
Preferably, a waist-shaped hole is formed in the position, opposite to the lower support body, of the upper support body.
A hot-dip galvanizing production process for processing a support bar comprises the following operation steps:
s1: processing and molding the support bar by a bending machine, processing a waist-shaped hole on the surface position of the support bar by using a drilling machine according to a designed position, and deburring by using a grinding wheel for later use;
s2: connecting the support bar with the cathode of direct current, placing the support bar in electrolyte, and connecting to 3A/dm2-10A/dm2Carrying out electrolysis for 10-15 minutes, and after the electrolysis is finished, washing and drying the support bar by using clear water for later use;
s3: preheating the cleaned support bar to 400-;
s4: placing the cooled support bar in passivation solution for passivation treatment, wherein the temperature of the passivation solution is 45-50 ℃, standing for 10-20 minutes, repeatedly washing the support bar with clear water for three times after passivation is finished, and drying the support bar with hot air;
s5: spraying antirust oil mist on the surface of the support bar after blow-drying, and wrapping the support bar by a PVC packaging film to complete the production of the support bar.
Preferably, the concentration of sodium hydroxide in the electrolyte of step S2 is 4mol/L-8mol/L, and the concentration of sodium carbonate or sodium silicate is 10mol/L-15 mol/L.
Preferably, the thickness of the pure zinc coating in step S3 is 60-80 microns, and the iron content in the zinc-iron alloy coating is 7% -15%.
Preferably, the content of chromate in the passivation solution of the step S4 is 4.8-7.6%, and the content of fluoride is 1.2-2.4%.
The invention has the technical effects and advantages that:
the support bar is bent to form the upper support body and the lower support body, the open end of the lower support body is embedded and fixed with the upper support body through the caulking groove, the interior of the formed support bar is of a hollow structure, the weight of the support bar can be greatly reduced, the support bar can bear larger transverse and longitudinal supporting force under the combined action of the upper support body and the lower support body, and the bending strength is high.
The support strip produced by the hot-dip galvanizing production process for processing the support strip can form a zinc-iron alloy layer with a stable structure on the surface, the zinc-iron alloy layer has good stability and is not easy to fall off, and the meticulous brightness degree of the surface of the support strip can be increased and the attractiveness of the support strip can be improved after passivation treatment.
Drawings
FIG. 1 is a top view of the support bar of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1 according to the present invention;
FIG. 3 is a bottom view of the support bar of the present invention;
fig. 4 is a side view of the supporting bar of the present invention.
In the figure: 101 upper supporting body, 102 lower supporting body, 103 waist-shaped hole and 104 caulking groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious 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.
As shown in fig. 1-4, a support bar, including the last supporter 101 and the lower supporter 102 that the integration set up, go up supporter 101 and lower supporter 102 through bending type, the section of going up supporter 101 is flat rectangle, lower supporter 102 is equipped with two, and two lower supporters 102 are laminated each other, the section of lower supporter 102 is the square, it is equipped with caulking groove 104 that is used for blocking lower supporter 102 tip to go up supporter 101 lower surface both ends.
The width of the upper support body 101 is the same as the sum of the widths of the two lower support bodies 102, so that the whole support bar is arranged in a square shape, and the four surfaces are planes, thereby being convenient to install.
And waist-shaped holes 103 are formed in the opposite positions of the upper support body 101 and the lower support body 102, and the waist-shaped holes 103 are used for installing bolts to fix the support bars.
Example 1
A hot-dip galvanizing production process for processing a support bar comprises the following operation steps:
s1: processing and molding the support bar by a bending machine, processing a kidney-shaped hole 103 on the surface position of the support bar by a drilling machine according to a design position, and deburring by a grinding wheel for later use;
s2: connecting the support bar with the cathode of direct current, placing the support bar in electrolyte, and connecting to 3A/dm2Carrying out electrolysis for 10 minutes, and after the electrolysis is finished, washing and drying the support bar by using clear water for later use;
s3: the method comprises the following steps of preheating a cleaned support bar to 400 ℃, immersing the support bar into a zinc liquid tank, standing for 15s, taking out, enabling zinc liquid to form a pure zinc coating on the surface of the support bar, heating the support bar dipped with the zinc liquid through a medium-frequency heating furnace at 520 ℃ for 10 minutes, naturally cooling to 400 ℃ after heating is finished, preserving heat for 20 minutes, diffusing the zinc coating in the heat preservation process to form a zinc-iron alloy coating, and taking out for natural cooling after the heat preservation is finished;
s4: placing the cooled support bar in passivation solution for passivation treatment, wherein the temperature of the passivation solution is 45 ℃, standing for 10 minutes, repeatedly washing the support bar with clear water for three times after passivation is finished, and drying the support bar with hot air;
s5: spraying antirust oil mist on the surface of the support bar after blow-drying, and wrapping the support bar by a PVC packaging film to complete the production of the support bar.
The concentration of sodium hydroxide in the electrolyte of the step S2 is 4mol/L, and the concentration of sodium carbonate is 10 mol/L.
In step S3, the thickness of the pure zinc plating layer is 60 μm, and the iron content in the zinc-iron alloy plating layer is 7%.
The content of chromate in the passivation solution in the step S4 is 4.8%, the content of fluoride is 1.2%, and the fluoride is used for passivation, so that a thicker chromate film can be obtained, the surface tension of the supporting strip can be reduced, the film forming is accelerated, and the fineness and brightness of the formed film are facilitated.
Example 2
A hot-dip galvanizing production process for processing a support bar comprises the following operation steps:
s1: processing and molding the support bar by a bending machine, processing a kidney-shaped hole 103 on the surface position of the support bar by a drilling machine according to a design position, and deburring by a grinding wheel for later use;
s2: connecting the support bar with the cathode of direct current, placing the support bar in electrolyte, and connecting to 7A/dm2Carrying out electric de-esterification for 13 minutes, and after the electrolysis is finished, washing and drying the support bar by using clear water for later use;
s3: preheating the cleaned support bar to 420 ℃, immersing the support bar into a zinc liquid tank, standing for 25s, taking out, forming a pure zinc coating on the surface of the support bar by using zinc liquid, heating the support bar dipped with the zinc liquid by using a medium-frequency heating furnace, wherein the heating temperature is 530 ℃, the heating time is 12 minutes, naturally cooling to 410 ℃ after heating, keeping the temperature for 25 minutes, diffusing the zinc coating in the heat preservation process to form a zinc-iron alloy coating, and taking out for natural cooling after the heat preservation is finished;
s4: placing the cooled support bar in passivation solution for passivation treatment, wherein the temperature of the passivation solution is 47 ℃, standing for 15 minutes, repeatedly washing the support bar with clear water for three times after passivation is finished, and drying the support bar with hot air;
s5: spraying antirust oil mist on the surface of the support bar after blow-drying, and wrapping the support bar by a PVC packaging film to complete the production of the support bar.
The concentration of sodium hydroxide in the electrolyte of the step S2 is 6mol/L, and the concentration of sodium carbonate is 12 mol/L.
In step S3, the thickness of the pure zinc plating layer is 70 μm, and the iron content in the zinc-iron alloy plating layer is 12%.
The content of chromate and fluoride in the passivation solution of the step S4 are 6.6% and 2.0%, respectively.
Example 3
A hot-dip galvanizing production process for processing a support bar comprises the following operation steps:
s1: processing and molding the support bar by a bending machine, processing a kidney-shaped hole 103 on the surface position of the support bar by a drilling machine according to a design position, and deburring by a grinding wheel for later use;
s2: connecting the support bar with the cathode of direct current, placing the support bar in electrolyte, and connecting to 10A/dm2Carrying out electrolysis for 15 minutes, and after the electrolysis is finished, washing and drying the support bar by using clear water for later use;
s3: the cleaned support bar is preheated to 440 ℃, then immersed in a zinc liquid tank, kept stand for 30s and then taken out, pure zinc coating is formed on the surface of the support bar by zinc liquid, then the support bar dipped with the zinc liquid is heated by an intermediate frequency heating furnace, the heating temperature is 540 ℃, the heating time is 15 minutes, after the heating is finished, the support bar is naturally cooled to 420 ℃, the temperature is kept for 30 minutes, the zinc coating is diffused in the heat preservation process to form a zinc-iron alloy coating, and after the heat preservation is finished, the support bar is taken out and naturally cooled;
s4: placing the cooled support bar in passivation solution for passivation treatment, wherein the temperature of the passivation solution is 50 ℃, standing for 20 minutes, repeatedly washing the support bar with clear water for three times after passivation is finished, and drying the support bar with hot air;
s5: spraying antirust oil mist on the surface of the support bar after blow-drying, and wrapping the support bar by a PVC packaging film to complete the production of the support bar.
The concentration of sodium hydroxide in the electrolyte of the step S2 is 8mol/L, and the concentration of sodium silicate is 15 mol/L.
In step S3, the thickness of the pure zinc plating layer is 80 μm, and the iron content in the zinc-iron alloy plating layer is 15%.
The content of chromate and fluoride in the passivation solution of the step S4 are 7.6% and 2.4%, respectively.
This support bar forms support body 101 and lower supporter 102 through buckling, and the open end of lower supporter 102 carries out the gomphosis through caulking groove 104 and last support body 101 fixed, and the inside hollow structure that is of support bar of formation, weight that can greatly reduced support bar under last support body 101 and lower supporter 102 combined action, can make the support bar bear bigger horizontal and vertical holding power, and resistant intensity of buckling is high.
The support strip produced by the hot-dip galvanizing production process for processing the support strip can form a zinc-iron alloy layer with a stable structure on the surface, the zinc-iron alloy layer has good stability and is not easy to fall off, and the meticulous brightness degree of the surface of the support strip can be increased and the attractiveness of the support strip can be improved after passivation treatment.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (1)

1. A hot-dip galvanizing production process for processing a support bar is characterized in that:
the supporting bar comprises an upper supporting body (101) and a lower supporting body (102) which are integrally arranged, the upper supporting body (101) and the lower supporting body (102) are formed by bending, the section of the upper supporting body (101) is a flat rectangle, the number of the lower supporting bodies (102) is two, the section of the lower supporting body (102) is a square, and two caulking grooves (104) used for clamping the end parts of the lower supporting body (102) are formed at the two ends of the lower surface of the upper supporting body (101); the width of the upper support body (101) is the same as the sum of the widths of the two lower support bodies (102); a waist-shaped hole (103) is arranged at the opposite position of the upper support body (101) and the lower support body (102);
the hot-dip galvanizing production process comprises the following operation steps:
s1: processing and forming the support bar by a bending machine, processing a waist-shaped hole (103) on the surface position of the support bar by using a drilling machine according to a design position, and deburring by using a grinding wheel for later use;
s2: connecting the support bar with the cathode of direct current, placing the support bar in electrolyte, and connecting to 3A/dm2-10A/dm2Carrying out electrolysis for 10-15 minutes, and after the electrolysis is finished, washing and drying the support bar by using clear water for later use;
the concentration of sodium hydroxide in the electrolyte is 4-8 mol/L, and the concentration of sodium carbonate or sodium silicate is 10-15 mol/L;
s3: preheating the cleaned support bar to 400-;
the thickness of the pure zinc coating is 60-80 microns, and the iron content in the zinc-iron alloy coating is 7% -15%;
s4: placing the cooled support bar in passivation solution for passivation treatment, wherein the temperature of the passivation solution is 45-50 ℃, standing for 10-20 minutes, repeatedly washing the support bar with clear water for three times after passivation is finished, and drying the support bar with hot air;
the content of chromate in the passivation solution is 4.8-7.6%, and the content of fluoride is 1.2-2.4%;
s5: spraying antirust oil mist on the surface of the support bar after blow-drying, and wrapping the support bar by a PVC packaging film to complete the production of the support bar.
CN201911316772.5A 2019-12-19 2019-12-19 Support strip and hot-dip galvanizing production process for processing same Active CN111020436B (en)

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CN111020436B true CN111020436B (en) 2021-08-20

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100742833B1 (en) * 2005-12-24 2007-07-25 주식회사 포스코 High Mn Steel Sheet for High Corrosion Resistance and Method of Manufacturing Galvanizing the Steel Sheet
CN105923510A (en) * 2016-07-13 2016-09-07 天津鑫宝龙电梯集团有限公司 Elevator supporting frame
CN107012418A (en) * 2017-04-07 2017-08-04 浙江梅轮电梯股份有限公司 A kind of elevator galvanized steel plain sheet and its manufacture method
CN108531921B (en) * 2018-06-29 2020-07-24 有能集团江苏威同电气设备有限公司 Surface galvanizing process for cable bridge
CN108821072B (en) * 2018-08-20 2023-12-26 迅达（中国）电梯有限公司 Bottom support frame for elevator car

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