Compact Strand Steel Wire Rope

Description:

The strand rope of compacted strand wire rope is generally compacted by die drawing, roll rolling or forging these three processes. After compaction, the wire rope strand diameter becomes smaller, the strand surface becomes smooth, the contact surface between the steel wire increases. The same layer steel wire and adjacent layer steel wire in the strand of compacted steel wire rope are in surface contact state. Due to its special structural characteristics, compacting strand wire rope has the characteristics of large bearing capacity, wear resistance, fatigue resistance and long service life. It is widely used in ships, offshore facilities, large hoisting, mine hoisting, blast furnace winch, large casting, oil drilling, overhead ropeway, construction machinery and lifting machinery and other equipment.

Detailed Information:

1. Surface treatment: galvanized, etc. (as requirements)

2. Material: carbon steel, etc.

3. Diameter: Customized according to customer needs.

4. Breaking load: Customized according to customer needs.

5. Application: single-layer and multi-layer winding such as rotary drilling rigs, crawler cranes, mobile cranes, etc.

6. Certificate & Standard:

Certificate: ABS,LR,CE,CCS,BV,DNV

Standard: GB8919 , GB/T 20067, ISO, ASTM, EN, JIS, etc.

Part specification of compacted strand wire rope:

Rope Type		Typical Construction		Rope Diameter (mm)
		Wire Rope	Strand
Compacted Strand Wire Rope	6xK7	6xK7	1+6	10-40
	6×K19	6xK19S	1+9+9	12-40
		6xK26WS	1+5+5/5+10	14-40
		6xK31WS	1+6+6/6+12	16-40
	6×K36	6xK36WS	1+7+7/7+14	24-68
		6xK41WS	1+8+8/8+16	38-68
	8×K19	8xK17S	1+8+8	16-38
		8xK19S	1+9+9	16-40
		8xK26WS	1+5+5/5+10	20-42
		8xK31WS	1+6+6/6+12	24-50
	8×K36	8xK36WS	1+7+7/7+14	28-78
		8xK41WS	1+8+8/8+16	30-78
	8xK19-PWRC(K)	8xK19S-PWRC(K)	1+9+9	20-48
		8xK26WS-PWRC(K)	1+5+5/5+10	20-48
		8xK31WS-PWRC(K)	1+6+6/6+12	20-56
	8xK36-PWRC(K)	8xK36WS-PWRC(K)	1+7+7/7+14	22-60
	15xK7	15xK7	1+6	20-60
	16xK7	16xK7	1+6	20-60
	18×K7	18xK7	1+6	14-48
	18×K19	18xK19S	1+9+9	24-60
	35WxK7	35WxK7	1+6	14-42
		35WxK19S	1+9+9	35-52
		35WxK26WS	1+5+5/5+10	40-60
	JL·1618K	JL·1618K	1+6	18-60
	JL·1710K	JL·1710K26WS	1+5+5/5+10	20-50
		JL·1710K31WS	1+6+6/6+12	20-50
		JL·1710K36WS	1+7+7/7+14	30-50
	JL·1712K	JL·1712K7	1+6	20-40
		JL·1712K19S	1+9+9	30-60

Notice: Customized according to customer requirements.

Cross Section Comparison With Other Structures

Features:

1. After compacting the strand of the steel wire rope, the steel wire in the strand is no longer a circular section, and the spiral surface contacts each other between the steel wire and the steel wire.

2. The filling coefficient of the metal in the compacted wire rope is large (generally above 0.9), and the gap between the steel wires is very small.

3. The circumferential surface of the compacted strand wire rope becomes smooth.

4. The structure of compacted wire rope is stable and the structure elongation is small.

5. Compacted strand wire rope has higher breaking tension;  Large contact area between compacted wire rope and pulley or drum makes compacted wire rope more wear-resistant and corrosion-resistant;  When using wire rope on multi-layer coiling drum, the smooth surface of the compacted strand wire rope ensures that it will not scratch or damage the steel rope due to friction with adjacent rope, which makes the compacted strand wire rope more suitable for multi-layer coiling occasions.

6. When the compacted strand wire rope bears the load, the contact stress between wires is smaller than that of wire contact wire rope due to the large contact area between wires.

Advantages:

1. Greater flexibility.

2. Larger metal area.

3. Higher breaking load, thus allowing a smaller diameter of 15-20%.

4. Larger surface contact area.

5. Lower contact pressure.

6. Increase wear resistance.

7. Improved corrosion resistance (due to external sealing of steel strand).

8. Increased resistance to mechanical damage/vibration.

9. Increased resistance to shock loads and whiplash.

Reduce mechanical stress on ropes and pulleys, thus extending the service life of pulleys and capstan drums.

11. Reduce the damage between adjacent winding in multi-layer winding, can be better wound on the drum.

12. Significantly lower costs due to reduced rope wear and extended service life, as well as reduced maintenance costs.

Processing methods:

1.The rolling method : Multiple sets of horizontal and vertical rollers to produce plastic compression deformation of the steel.

wire in the strand by means of roll forming.

2.The forging method : Online or off-line forging equipment to forge round strands through rotary die forging to produce.

plastic compression deformation of the steel wires in the strands.

3. The integral die drawing method :A cemented carbide die to replace the pressure line tile, and the round strand undergoes plastic compression deformation in the die hole.

Comparison of process and quality
Product quality control point	Other suppliers’ bad quality products	Harmful consequence	Our good quality products	Good result
☺Raw material	To save cost to purchase inferior carbon steel wire as raw materials	Lead to poor wire rope quality, short service life	Buy high quality carbon structural steel wire or stainless steel wire	Meet user quality requirements, long service life
☺Wire drawing	To save cost to purchase inferior carbon steel wire as raw materials	The diameter of the steel wire exceeds the specified deviation, the surface of the wire drawing powder uneven adhesion, the wire drawing quality is poor	Carefully operate in strict accordance with standards	To ensure the surface quality of steel wire, steel wire diameter and piece weight within the specified range
☺Heat treatment	Carbon steel wire rod and wire do not undergo heat treatment, or heat treatment technology and operation is not standard	The drawing and mechanical properties of steel wire are not qualified and the quality of steel wire is poor	Heat treatment of high quality carbon steel wire rod and wire. Good heat treatment technology	The internal structure of the steel wire is improved, and the steel wire has excellent drawing andmechanical properties
☺Testing	Only a small number of simple wire rope products are tested	There are big loopholes in the quality inspection of ex-factory products, and some ex-factory products are unqualified	Conduct a large number of wire rope product tests, including wire rope breaking test and wire rope performance test	Strictly control the quality inspection of finished products to ensure 100% qualified products

Pictures of Compact Strand Wire Rope: