Stainless Steel 316 Marine Wire Rope 7 X 19 3mm(1/8 Inch) Rigging Cable

Product Description:

Material Advantages:

Manufacturing Process:

The production process of 316 stainless steel marine wire rope (7×19 structure, 3mm) must strictly follow the metal drawing and twisting process, focusing on the hierarchical processing of "wire → strand → rope," while incorporating the adaptation to the properties of 316 stainless steel.

### 1. Raw Material Preparation and Inspection

- Select standard-compliant 316 stainless steel wire rods. First, use a spectrometer to test the chemical composition, ensuring that the contents of chromium (16%-18%), nickel (10%-14%), and molybdenum (2%-3%) meet the standards, avoiding deviations in composition that could affect corrosion resistance.

- Conduct a visual inspection of the wire rods, rejecting raw materials with surface cracks, excessively thick oxide scale, or scratches to ensure the quality of subsequent wire drawing.

### 2. Wire Drawing Treatment (Monofilament Production)

- **Pretreatment**: Immerse the 316 stainless steel wire rods in an acid pickling tank, using a mixed solution of nitric acid and hydrofluoric acid to remove the surface oxide layer, followed by cleaning and drying to prevent residual acid from corroding the base material.

- **Multi-pass wire drawing:** The wire diameter is gradually reduced using a wire drawing machine, drawing from the original wire rod size to the target single wire diameter (approximately 0.3mm in a 7×19 structure). Each wire drawing pass requires annealing (approximately 1050℃) to eliminate work hardening, restore the toughness of the 316 stainless steel, and prevent wire breakage during the drawing process.

- **Single wire inspection:** The diameter tolerance (must meet ±0.01mm standard), tensile strength (≥620MPa), and surface finish of the finished single wires are inspected to ensure no burrs or cracks.

### 3. Stranding (Strand Formation)

- Following the specification of "19 single wires twisted into 1 strand," qualified 316 stainless steel single wires are placed into a stranding machine. One single wire is used as the center wire, and the remaining 18 single wires are twisted around the center wire in two layers to form a 19-wire strand.

- Control the twisting speed (usually 100-150 r/min) and the twist pitch (6-8 times the strand diameter) to ensure a tight, non-loose strand structure and prevent stress concentration in individual filaments due to excessive twisting.

### 4. Rope Assembly (Wire Rope Production)

- Feed the 7 pre-twisted strands into the rope assembly machine. Using one strand as the center, the remaining 6 strands are twisted around the center strand in a specified direction (usually right-hand interlaced twist) to form a 7×19 structure 3mm wire rope.

- During the rope assembly process, a fiber core (usually polypropylene or flax core) needs to be wound simultaneously to enhance the flexibility and impact resistance of the wire rope, while also filling the gaps between strands to reduce wear during use.

- After rope assembly, the wire rope undergoes pre-tensioning to eliminate twisting stress and prevent structural deformation during subsequent use.

### 5. Surface Treatment and Quality Inspection

- **Surface Cleaning**: Rinse the wire rope surface with high-pressure water to remove residual grease and impurities from the twisting process. If necessary, perform passivation treatment (spraying with chromate passivating agent) to further enhance the corrosion resistance of 316 stainless steel.

- **Comprehensive Inspection**:

1. Dimensional Inspection: Measure the wire rope diameter (ensuring 3mm ± 0.05mm) and lay length with calipers to check if the structure conforms to the 7×19 standard.

2. Mechanical Property Testing: Conduct sampling for breaking tensile strength tests (≥1.8kN) and bending fatigue tests to verify strength and toughness.

3. Corrosion Resistance Testing: Conduct a neutral salt spray test (48 hours) to observe for surface rust, ensuring suitability for marine environments.

### 6. Finished Product Packaging and Warehousing

- Qualified wire ropes are coiled and cut to specified lengths according to customer requirements (e.g., 100 meters/coil). The outer layer is wrapped with a waterproof plastic film to prevent moisture damage during transportation.

- Affix product labels indicating parameters such as material (316 stainless steel), structure (7×19), diameter (3mm), breaking tensile strength, etc., and then store them in the warehouse. The storage environment should be kept dry and ventilated to prevent corrosion from salt or moisture.

Features:

Stainless Steel 316 Marine Wire Rope 7 x 19 3mm features the following characteristics:

- **Excellent Corrosion Resistance**: Made of 316 stainless steel containing 16-18% chromium, 10-14% nickel, and approximately 2% molybdenum, these elements give it excellent corrosion resistance, especially in chloride environments. Compared to ordinary 304 stainless steel, it offers superior resistance to corrosion from seawater, acids, and alkalis.

- **High Strength and Durability**: The 7x19 construction provides high tensile strength, enabling it to withstand heavy loads. This robust structure ensures safety and efficiency in demanding tasks, making it suitable for heavy-duty applications.

- **Good Flexibility**: The 7x19 wire rope offers better flexibility than 1x19 and 7x7 wire ropes, allowing it to bend more easily around pulleys and sheaves without losing strength. This makes it ideal for dynamic applications involving frequent movement and tension.

- **Abrasion and Fatigue Resistance:** The Independent Wire Strand (IWS) design increases the abrasion resistance of the wire rope, making it more durable than other wire rope structures. It also exhibits good fatigue resistance, maintaining a longer service life even under continuous use in harsh environments, reducing the need for frequent maintenance.

- **Smooth Surface:** The smooth surface of the wire rope reduces friction when passing through pulleys or other components, extending not only the service life of the wire rope itself but also the lifespan of related equipment. The smooth surface also adds to its aesthetic appeal.

- **Standardized Specifications and Wide Applicability:** The 3mm (1/8 Inch) diameter specification is suitable for various applications, such as marine rigging and cable railing. Furthermore, it conforms to relevant industry standards, such as AISI standards, ensuring product quality and versatility.

Technical Parameters:

Applications:

316 stainless steel marine wire rope, 7×19 structure, 3mm diameter, is widely used in the following fields due to its excellent corrosion resistance, high strength, and good flexibility:

- **Marine Industry**

- **Marine Rigging**: Used for mast support, sail securing, and control systems on yachts and sailboats, such as webbing, cables, or railings. The 7×19 structure wire rope offers good flexibility and strength, meeting various rigging requirements during ship navigation.

- **Anchor Chains and Mooring Systems**: Can be used as anchor chains for small vessels or as part of mooring systems for large vessels. It can withstand the tension of the ship during mooring and the impact of waves, and its seawater corrosion resistance ensures long-term use in seawater without severe corrosion.

- **Lifting Equipment**: 316 stainless steel wire rope is commonly used in lifting equipment such as pumps and cranes on ships for lifting cargo and equipment. Its high strength and corrosion resistance ensure safe and reliable lifting operations.

- **Marine Engineering**

**Offshore Drilling Platforms**: Used for platform anchoring, towing, and equipment hoisting. In harsh marine environments, 316 stainless steel wire ropes can withstand immense tensile force and corrosive media, ensuring platform stability and normal equipment operation.

**Marine Aquaculture**: Can be used to construct frames and connecting components for aquaculture cages, resisting seawater corrosion and ensuring structural stability over long periods. It can also be used for lifting and towing aquaculture equipment.

**Construction**

**Building Curtain Walls**: Used to support and secure glass panels in high-rise building curtain walls. Its high strength and excellent weather resistance ensure both safety and aesthetics.

**Bridge Construction**: Can be used as cables and slings in bridge construction, bearing the tension and vibration of the bridge structure. The corrosion resistance of 316 stainless steel wire ropes gives it an advantage in bridge construction in coastal or humid environments.

**Other Fields**

**Power Industry**: Used for the tension erection and maintenance of power lines. It maintains stable performance in harsh outdoor environments, ensuring safe and reliable power transmission. - **Heavy Equipment Manufacturing:** In heavy equipment requiring high-strength, corrosion-resistant ropes, such as port cranes and large logistics equipment, 316 stainless steel wire ropes can serve as key components for hoisting and traction.

- **Safety Protection Field:** It can be used to manufacture fall arrest nets, stainless steel rope nets, and other safety protection facilities. Its high strength and corrosion resistance provide strong protection for personnel and property.

Support and Services:

Start your worry-free choice for your maritime business with our marine steel wire ropes. Our ropes feature advanced craftsmanship and excellent quality, capable of withstanding rigorous tests. Coupled with professional technical support and considerate after-sales service, we will provide solid guarantees for your business throughout the whole process.

Any question please let us know ,our JinCheng maritime will provide you the best service with 7*24 hours ~