CN-122006999-A - Sweat erosion resistant composite coating process for metal surface of fitness equipment

CN122006999ACN 122006999 ACN122006999 ACN 122006999ACN-122006999-A

Abstract

The invention discloses a sweat corrosion resistant body-building equipment metal surface composite coating process, which relates to the technical field of metal surface composite coatings and comprises the following steps of a, checking a metal pipe, b, performing surface treatment, cleaning the outer wall of the metal pipe and increasing surface roughness, c, coating processing, and d, checking the coating. The core value of the protective chain is that a complete protective chain from a matrix to the surface is formed, firstly, the qualification of the base material is ensured by strict inspection, then, an optimal adhesion foundation is created by sand blasting cleaning, and finally, the dacromet coating is used for providing three synergistic protection of electrochemical corrosion resistance, compact shielding by epoxy resin and wear resistance and weather resistance of polyurethane finish paint. Finally, through double quality control of appearance film thickness full detection and attached salt spray spot inspection, each process is ensured to reach the standard.

Inventors

ZHU YUFEI
QIAN LIN
LI ZHENGYU

Assignees

南通瑞升运动休闲用品有限公司

Dates

Publication Date: 20260512
Application Date: 20260122

Claims (8)

1. The sweat erosion resistant body-building apparatus metal surface composite coating process is characterized by comprising the following steps: a, checking a metal tube, namely checking the outer wall of the metal tube; b, surface treatment, namely cleaning the outer wall of the metal pipe and increasing the surface roughness; coating processing, namely Dacromet corrosion prevention, epoxy priming, polyurethane wear resistance, triple protection and sweat corrosion resistance; And d, coating inspection, namely fully inspecting the apparent film thickness, carrying out suction test on attached salt fog, and closing layer by layer to ensure long-acting and reliable coating.
2. A sweat erosion resistant body-building apparatus metal surface composite coating process according to claim 1, wherein the surface treatment comprises the steps of: alkali washing, namely pre-cleaning, and degreasing and removing impurities on the surface of the metal tube; b, washing, namely removing impurities and alkali liquor on the outer wall of the metal tube; c, secondary water washing, namely further removing impurities and alkali liquor on the outer wall of the metal tube; d, drying and cleaning, namely removing water stains on the surface; e, sand blasting and rust removal, namely removing rust on the surface to increase the surface roughness; And f, cleaning by dry air, namely removing surface impurities and sand and stones.
3. The sweat erosion resistant body-building apparatus metal surface composite coating process of claim 1, wherein the coating process comprises the steps of: a, coating a chromium-free Dacromet layer, namely forming a compact coating mainly comprising zinc-aluminum scales on the surface of metal, providing electrochemical sacrificial protection and physical barrier, and resisting sweat chloride ion corrosion; b, centrifugal liquid throwing, namely generating centrifugal force through high-speed rotation, accurately throwing away excessive coating, and ensuring uniform and consistent coating thickness and no sagging; c, preheating, baking and high-temperature curing, namely firstly removing moisture at low temperature to prevent explosion holes, and then sintering at high temperature to crosslink and cure the coating to form a hard anti-corrosion layer; d, cooling and layer inspection, namely after the coating is cooled and stabilized, detecting the film thickness and appearance, ensuring the quality of a single layer to be qualified, and laying a foundation for the next process; spraying epoxy resin primer, namely spraying a compact epoxy layer on the Dacromet layer to provide excellent adhesive force and chemical shielding and isolate corrosive medium; f, curing and layer inspection, namely, completely crosslinking and hardening the coating by heating, and then inspecting the quality of the layer to ensure that the coating achieves the design protective performance; spraying polyurethane and fluorocarbon finish paint, namely spraying high wear-resistant and weather-resistant finish paint, providing final decoration, protection and hydrophobic functions, and directly coping with wear and sweat; and h, solidifying, namely heating at high temperature to enable the finish paint to be melted, leveled, crosslinked and solidified to form a hard, compact and functional final protective surface.
4. A sweat erosion resistant exercise machine metal surface composite coating process according to claim 1, wherein said coating inspection comprises the steps of: a, judging whether the product is qualified or not, registering and warehousing the qualified product, inputting a file, and retrieving a defective product record; And b, if the existing problems exist, repairing according to the past experience, analyzing reasons, and providing a repairing scheme and an optimizing process.
5. A sweat erosion resistant exercise machine metal surface composite coating process according to claim 1, wherein the coating inspection further comprises the following detection: full inspection, namely film thickness detection and appearance detection; And (5) spot inspection, namely adhesive force and salt spray test.
6. The sweat corrosion resistant body building apparatus metal surface composite coating surface treatment according to claim 2, characterized by comprising an alkaline washing component (1) for cleaning the surface of a metal pipe, two groups of water washing components and a rail (4), wherein the alkaline washing component (1) and the water washing component are identical in structure, one side of one water washing component far away from one end of the alkaline washing component (1) is provided with an air drying box (2), one side of the air drying box (2) is provided with a placing table (3), the outer wall of the rail (4) is provided with a traction device (5), and one side of the placing table (3) is provided with a manipulator (6) and a sand blasting machine (7).
7. The sweat corrosion resistant body building apparatus metal surface composite coating surface treatment according to claim 6, wherein the alkaline washing component (1) comprises an alkaline washing tank (101), one side of the alkaline washing tank (101) is provided with a liquid storage tank (102), the alkaline washing tank (101) is connected with the bottom of the liquid storage tank (102) through a pipeline, a water pump is arranged in the middle of the pipeline, a filtering component (8) is arranged at the upper end of the liquid storage tank (102), a reflux tank (104) is arranged at the top of the alkaline washing tank (101), a reflux plate (103) is arranged on one side, close to the liquid storage tank (102), of the reflux tank (104), a reflux hole communicated with the reflux plate (103) is formed in the side wall of the reflux tank (104), and the reflux tank (104) is communicated with the filtering component (8).
8. The sweat erosion resistant body-building equipment metal surface composite coating surface treatment according to claim 7, wherein the filter assembly (8) comprises a filter tank (801) arranged at the upper end of a liquid storage tank (102), a return pipe (813) is arranged at the upper end of the filter tank (801), a flow distribution disc (802) is arranged at the upper end of the inside of the filter tank (801), a filter hopper (803) is arranged at the middle position of the inside of the filter tank (801), a collecting cavity (804) is fixedly arranged at the lower end of the filter hopper (803), a filter cartridge (805) is fixedly communicated with one side of the collecting cavity (804), a spiral vane (806) is arranged at the bottom of the collecting cavity (804) and the inside of the filter cartridge (805), a fixed shaft is fixedly arranged at the middle position of the spiral vane (806), one end of the fixed shaft penetrates through the filter tank (801) and is rotationally connected with the filter tank (801), one end of the fixed shaft positioned at the outside of the filter tank (801) is provided with a distribution disc (807), a guide cavity (808) positioned at the lower end of the inside of the filter tank (801) and provided with a guide cavity (808) positioned at the lower end of the filter tank (805) is fixedly communicated with the guide cavity (808), the inside lateral wall of rose box (801) is fixed to be provided with cooperation collecting box (809) gliding slide rail (811), closing plate (810) that cooperation collecting box (809) used have been seted up to the outer wall of rose box (801), the inside of rose box (801) is located the upper end of cartridge filter (805) and is fixed to be provided with baffle (812) of slope.

Description

Sweat erosion resistant composite coating process for metal surface of fitness equipment Technical Field The invention relates to the technical field of metal surface composite coatings, in particular to a sweat erosion resistant body-building equipment metal surface composite coating process. Background The composite coating process for the metal surface is a composite coating system with excellent protection and functional characteristics on the surface of a metal substrate through multiple coating and curing treatments. The process generally comprises surface pretreatment (such as alkali washing and sand blasting rust removal), coating an environment-friendly chromium-free Dacromet layer, centrifugal liquid throwing, preheating baking and high-temperature curing, spraying epoxy resin primer, polyurethane or fluorocarbon finish paint in sequence, and performing layer-by-layer curing and quality detection. The composite coating has excellent corrosion resistance, adhesive force, wear resistance and weather resistance, is widely applied to the fields of high-end equipment such as aerospace, ocean engineering, rail transit and the like, and belongs to the crossing technology of new materials and energy-saving and environment-friendly industries. In the field of metal surface protection, traditional processes such as electrogalvanizing, ordinary paint spraying and the like have obvious limitations. Although the electroplating process has certain corrosion resistance, cyanide-containing wastewater and hexavalent chromium generated in the production process have serious environmental hazard, and the plating layer has weak adhesion and is easy to generate hydrogen embrittlement, so that the requirements of high-strength application scenes cannot be met. The common spray coating is thin and has poor binding force, and is easy to rust and peel in a humid and high-salinity (such as sweat) environment, so that the instrument fails in advance. In the prior art, a single coating system is difficult to meet multiple requirements of deep corrosion resistance, strong adhesion, surface wear resistance and the like, and lacks of the whole flow quality control from substrate treatment to finished product inspection, so that the product performance is unstable and the service life is short. Disclosure of Invention The invention aims to solve the problems and provides a composite coating process for the metal surface of the sweat erosion resistant body-building equipment. In order to achieve the above purpose, the invention adopts the following technical scheme that the method comprises the following steps: a, checking a metal tube, namely checking the outer wall of the metal tube; b, surface treatment, namely cleaning the outer wall of the metal pipe and increasing the surface roughness; coating processing, namely Dacromet corrosion prevention, epoxy priming, polyurethane wear resistance, triple protection and sweat corrosion resistance; d, coating inspection, namely fully inspecting the apparent film thickness, carrying out suction test on attached salt mist, and closing layer by layer to ensure long-acting and reliable coating; In practical application, the four-step process system constructs a long-acting composite protective layer for the metal component through systematic engineering. The core value of the protective chain is that a complete protective chain from a matrix to the surface is formed, firstly, the qualification of the base material is ensured by strict inspection, then, an optimal adhesion foundation is created by sand blasting cleaning, and finally, the dacromet coating is used for providing three synergistic protection of electrochemical corrosion resistance, compact shielding by epoxy resin and wear resistance and weather resistance of polyurethane finish paint. Finally, through double quality control of appearance film thickness full detection and attached salt spray spot inspection, each process is ensured to reach the standard. Further, the surface treatment includes the steps of: alkali washing, namely pre-cleaning, and degreasing and removing impurities on the surface of the metal tube; b, washing, namely removing impurities and alkali liquor on the outer wall of the metal tube; c, secondary water washing, namely further removing impurities and alkali liquor on the outer wall of the metal tube; d, drying and cleaning, namely removing water stains on the surface; e, sand blasting and rust removal, namely removing rust on the surface to increase the surface roughness; f, dry air cleaning, namely removing surface impurities and sand and stones; In practical application, the surface treatment process remarkably improves the binding force and durability of the metal pipe coating through multi-step fine cleaning and activation. The alkali washing is effective in removing oil and impurities, and the double water washing thoroughly removes residual alkali liquor, thereby avoiding chemical corrosion. The dry