Durable high-strength carbon spring steel wire for greenhouse film pressing
By improving carbon spring steel wire through shot peening hardening and surface coating, the structural strength and weather resistance problems of steel wire used for greenhouse film pressing have been solved, achieving high strength, durability and corrosion resistance, and making it suitable for agricultural greenhouse frames.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU HUASHEN METAL PROD CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-14
AI Technical Summary
The existing steel wire structure used for greenhouse film pressing has low strength, poor fatigue resistance, and insufficient weather resistance, which leads to loosening and falling off of the film, short service life, and inability to adapt to the harsh environment of windy and rainy areas.
The carbon spring steel wire matrix is shot-peened and hardened to form equally spaced serrated trapezoidal protrusions. The outer surface is coated with a heat-resistant primer, an anti-corrosion layer, and a wear-resistant layer. The structural design is optimized to improve elastic cushioning performance and durability.
It improves the elastic strength and corrosion resistance of the steel wire, ensures uniform stress on the membrane surface, extends service life, and enables it to maintain resilience outdoors for a long time, resisting wind and rain erosion and adapting to windy and rainy environments.
Smart Images

Figure CN224120570U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of spring steel wire technology, and in particular to a durable, high-strength carbon spring steel wire for greenhouse film pressing. Background Technology
[0002] The film-pressing spring structure of agricultural greenhouse frames uses elastic deformation to tightly hold the plastic film or shade netting to the greenhouse frame, preventing the film from loosening or tearing due to wind, rain, or temperature changes. The core requirements for this structure are durable elasticity and weather resistance. However, ordinary steel wire with a U-shaped or wavy corrugated structure has low structural strength, poor fatigue resistance, and insufficient resilience. Prolonged exposure outdoors can easily lead to plastic deformation causing the film to loosen, reducing its wind pressure resistance and causing it to detach. It also has poor adaptability to windy and rainy areas, is not resistant to moisture, sunlight, or pesticide corrosion, has a short service life, and poor durability. Utility Model Content
[0003] This application addresses the shortcomings of existing technologies by providing a durable, high-strength carbon spring steel wire for greenhouse film pressing. This wire has higher elastic strength, an optimized bending and forming structure, improved elastic buffering performance, ensures uniform stress on the film surface, a long service life, and better durability.
[0004] This application solves the above-mentioned technical problems through the following technical solutions.
[0005] The durable, high-strength carbon spring steel wire for greenhouse film pressing includes a carbon spring steel wire substrate that has been shot-blasted and hardened. The diameter of the carbon spring steel wire substrate is 1.9mm to 2.5mm. The carbon spring steel wire substrate is bent to form several equally spaced serrated trapezoidal protrusions. The height of the trapezoidal protrusions is 32mm to 38mm, the length of the upper base of the trapezoidal protrusions is 28mm to 35mm, and the spacing between the trapezoidal protrusions is 25mm to 32mm. The outer surface of the carbon spring steel wire substrate is coated with a heat-resistant primer layer.
[0006] Preferably, the surface of the heat-resistant primer layer is coated with an anti-corrosion layer.
[0007] Preferably, the anti-corrosion layer is an acrylic resin anti-corrosion coating.
[0008] Preferably, the outer surface of the acrylic resin anti-corrosion coating is coated with a tungsten carbide wear-resistant layer.
[0009] Preferably, the anti-corrosion layer is a ceramic coating.
[0010] Preferably, the anti-corrosion layer is a polytetrafluoroethylene anti-corrosion coating.
[0011] Preferably, the diameter of the carbon spring steel wire matrix is 2mm or 2.3mm.
[0012] Preferably, the length of the upper base of the trapezoidal protrusion is 33mm, the distance between the trapezoidal protrusions is 33mm, and the height of the trapezoidal protrusion is 35mm.
[0013] The beneficial effects of this application are:
[0014] 1. Carbon spring steel wire treated with shot peening has higher elastic strength and hardness, allowing for a reasonable reduction in wire diameter from 1.9mm to 2.5mm while providing the same load-bearing capacity, thus helping to reduce costs.
[0015] 2. The carbon spring steel wire matrix is optimized by bending to form several trapezoidal protrusions with equal spacing serrations, replacing the original U-shaped or wavy structure. It has better elastic buffering performance, ensures uniform stress on the membrane surface, and improves resistance to the direct impact of strong winds on the film. According to the greenhouse span, the carbon spring steel wire matrix can automatically adjust the elastic strength to keep the membrane surface flat, improve its own service life, and have better durability.
[0016] 3. The outer surface of the carbon spring steel wire substrate is coated with a heat-resistant primer layer, and an anti-corrosion layer and a wear-resistant layer are applied on top of the primer, which helps to resist moisture, sunlight and pesticide corrosion. It can maintain its resilience even after long-term exposure to the outdoors, avoids film relaxation due to plastic deformation, is not easily deformed, and helps to reduce costs with long-term repeated use. Attached Figure Description
[0017] The accompanying drawings are intended to illustrate preferred embodiments and do not constitute a limitation on the scope of protection of this application.
[0018] Figure 1 This is a structural schematic diagram of an embodiment of this application;
[0019] In the diagram: 1-Carbon spring steel wire matrix, 2-Trapezoidal protrusion. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0021] like Figure 1As shown in the embodiment of this application, the durable high-strength carbon spring steel wire for greenhouse film pressing includes a shot-blasted and hardened carbon spring steel wire substrate 1 with a wire diameter of 1.9 mm to 2.5 mm. The carbon spring steel wire substrate 1 is bent to form a plurality of equally spaced serrated trapezoidal protrusions 2. The height of the trapezoidal protrusions 2 is 32 mm to 38 mm, the length of the upper base of the trapezoidal protrusions 2 is 28 mm to 35 mm, and the spacing between the trapezoidal protrusions 2 is 25 mm to 32 mm. In one embodiment, the length of the upper base of the trapezoidal protrusions 2 is 33 mm, the spacing between the trapezoidal protrusions 2 is 33 mm, and the height of the trapezoidal protrusions 2 is 35 mm. For example, the wire diameter of the carbon spring steel wire substrate 1 is 2 mm or 2.3 mm.
[0022] The outer surface of the carbon spring steel wire substrate 1 is coated with a heat-resistant primer layer. The surface of the heat-resistant primer layer is coated with an anti-corrosion layer. In one embodiment, the anti-corrosion layer is an acrylic resin anti-corrosion coating. Further, the outer surface of the acrylic resin anti-corrosion coating is coated with a tungsten carbide wear-resistant layer. In one embodiment, the anti-corrosion layer is a ceramic coating. In one embodiment, the anti-corrosion layer is a polytetrafluoroethylene (PTFE) anti-corrosion coating.
[0023] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. Durable, high-strength carbon spring steel wire for greenhouse film pressing, characterized by: The carbon spring steel wire substrate (1) is shot-peened and hardened. The diameter of the carbon spring steel wire substrate (1) is 1.9 mm to 2.5 mm. The carbon spring steel wire substrate (1) is bent to form a number of equally spaced serrated trapezoidal protrusions (2). The height of the trapezoidal protrusions (2) is 32 mm to 38 mm. The length of the upper bottom edge of the trapezoidal protrusions (2) is 28 mm to 35 mm. The spacing between the trapezoidal protrusions (2) is 25 mm to 32 mm. The outer surface of the carbon spring steel wire substrate (1) is coated with a heat-resistant primer layer.
2. The durable high-strength carbon spring steel wire for greenhouse film pressing according to claim 1, characterized in that: The surface of the heat-resistant primer layer is coated with an anti-corrosion layer.
3. The durable high-strength carbon spring steel wire for greenhouse film pressing according to claim 2, characterized in that: The anti-corrosion layer is an acrylic resin anti-corrosion coating.
4. The durable high-strength carbon spring steel wire for greenhouse film pressing according to claim 3, characterized in that: The outer surface of the acrylic resin anti-corrosion coating is coated with a tungsten carbide wear-resistant layer.
5. The durable high-strength carbon spring steel wire for greenhouse film pressing according to claim 2, characterized in that: The corrosion-resistant layer is a ceramic coating.
6. The durable high-strength carbon spring steel wire for greenhouse film pressing according to claim 2, characterized in that: The anti-corrosion layer is a polytetrafluoroethylene anti-corrosion coating.
7. The durable high-strength carbon spring steel wire for greenhouse film pressing according to claim 1, characterized in that: The diameter of the carbon spring steel wire matrix (1) is 2 mm or 2.3 mm.
8. The durable high-strength carbon spring steel wire for greenhouse film pressing according to claim 1, characterized in that: The length of the upper base of the trapezoidal protrusion (2) is 33mm, the distance between the trapezoidal protrusions (2) is 33mm, and the height of the trapezoidal protrusion (2) is 35mm.