When it comes to right angle hung plate, many users are very concerned about their manufacturing process. Understanding the production process is very helpful for later use. Below, we will introduce it in detail: The standard models of right-angle wall panels adopt an "integrated steel plate stamping + bending process": High-strength carbon steel plates such as Q235 and Q355 are selected. The basic outline is stamped out in one go using precision molds, and then precisely bent into a 90° right-angle structure using a CNC bending machine. The advantages of this process are: ① It avoids stress concentration caused by welding, resulting in strong overall structural integrity. Under stress, the load is evenly distributed, and the nominal destructive load can accurately reach 70-160kN, meeting the requirements of medium and low voltage lines; ② It has high production efficiency, with a single set of molds capable of producing thousands of pieces per day, suitable for batch supply, reducing unit production costs.
For right angle hung plate designed for heavy loads, a "cast steel forging process" is employed: carbon steel billets are heated to a thermoplastic state of 1100-1250℃ and then forged using a forging press. The core advantages of forging are: ① It eliminates defects such as porosity and air bubbles inside the steel, resulting in denser grains and tensile strength that is more than 30% higher than that of stamped parts. It can withstand high destructive loads of 400-640kN, making it suitable for heavy-load scenarios in high-voltage and ultra-high-voltage lines; ② The rounded transition at the right-angle connection is more natural, avoiding local stress concentration and making it less prone to breakage when subjected to dynamic loads such as line tension and wind sway over long periods.
After forming, the blank will undergo precision machining on CNC lathes and milling machines: ① Key parameters such as connecting hole diameter, bolt matching thread, and fork opening size (C1, C2) will be finely cut, with tolerances controlled within ±0.02mm, to ensure "seamless connection" with matching components such as insulators, bolts, and tower connectors, without the need for on-site adjustments; ② The connecting surfaces will be ground and polished to a roughness Ra≤1.6μm to reduce frictional resistance during assembly and avoid stress concentration caused by uneven contact surfaces.
Right angle hung plate are exposed to the outdoors for extended periods, and anti-corrosion technology is the core guarantee of their "durability." The mainstream "hot-dip galvanizing process" (with some customized models featuring passivation treatment) has significant advantages:
Hot-dip galvanizing involves immersing the formed steel panel in molten zinc at 440-460℃ for 3-5 minutes, forming a zinc layer 85-100μm thick on the steel surface. Its advantages are: ① The zinc layer forms a metallurgical bond with the substrate, with adhesion far exceeding that of electroplating (in adhesion tests, it showed no peeling even after scribing and tapping), resisting wear from outdoor wind, rain, and vibration; ② The dense, non-porous zinc layer completely isolates the steel from air, moisture, acids, and alkalis, extending its service life to 15-20 years in normal outdoor environments and 8-12 years in salt spray environments at the coast and humid mountain environments, far exceeding the service life of ungalvanized products (only 3-5 years).
The assembly-quality inspection process for right angle hung plate is the "last line of defense" to ensure product reliability, and its technological advantages are reflected in "strict attention to detail and high testing standards":
The stainless steel cotter pins, bolts, and other accessories used in assembly are all galvanized or passivated, ensuring consistent corrosion resistance with the mounting plate itself and preventing overall connection failure due to component corrosion. Furthermore, the cotter pins are designed as "flexible plug-in" pins, requiring no special tools for installation; they automatically lock after insertion, and disassembly requires only a gentle pry, significantly improving the efficiency of power emergency repairs and line maintenance.
The finished right angle hung plates undergo multiple rigorous tests to ensure a 100% factory pass rate: ① Mechanical performance testing: Tensile testing is used to test the breaking load; the actual load must be ≥ the nominal value (e.g., the actual breaking load of the Z-16 type ≥ 160kN). Unqualified products are directly rejected; ② Corrosion resistance testing: Salt spray testing and zinc layer thickness measurement (using a coating thickness gauge) ensure the zinc layer thickness meets standards and there are no incomplete coatings; ③ Dimensional accuracy testing: Key dimensions are verified using a coordinate measuring machine to avoid assembly difficulties due to dimensional deviations; ④ Appearance inspection: Manual and machine vision checks are used to inspect for defects such as zinc layer bubbles, scratches, and burrs, ensuring a neat product appearance.
