Marine Mooring Closed Chock, Panama Boat Chock
Marine Mooring Closed Chock,Panama Boat Chock Mounting type: bulwark mounted, deck mounted Inner diameter: 150mm to 300mm Outer diameter: 318mm to 510mm Height of the chock: 144mm to 179mm Wire diameter: 18mm to 24mm Mass weight: 18kg to 46kg Technology Details: Quality:       ISO9001:2000 , OEM&ODM,CNC control  The chocks are  widely used for small boats and different vessels, such as container vessel, tankers, bulk carriers, tug, dry cargo vessels, etc. Product No. SWL(KN) Dimension(mm) Mass(kgs) L W H H1 A B    001 20 360 200 316 158 160 115 29  002 30 450 250 390 195 200 140 48  003 50 550 300 480 240 250 180 85  004 80 680 360 586 293 320 225 136  005 125 840 440 710 355 400 270 211  006 200 1020 520 840 420 500 320 256  007 320 1300 700 1100 550 600 400 840   Bulwark Mounted Deck Mounted JIS F-2007 Type A JIS F-2005 JIS F-2007 Type B JIS F-2017 Type AC JIS F-2017 Type BC DIN81915 Type C JIS F-2030 Type A NS2588 DIN 81915 Type A NS2590 DIN 81915 Type C CB 34-76 NS 2587 CB 34-2007 NS 2589 Panama Chock Square Chock EU Type  Spanish Type  Open Chock
Tungsten carbide roller has characteristics of good wear resistance, high temperature red hardness, thermal fatigue resistance and thermal conductivity and high strength , have been widely used in high-speed wire rod, bar, rebar, seamless steel tubes, etc. Domestic production of tungsten carbide roller materials mostly WC- Co, WC- Co- Ni- Cr two series, and the content of Co, Co- Ni - Cr is in the range of 6wt% ~ 30wt%. From the use of perspective, tungsten carbide rollers has good mechanical properties, its flexural strength up to 2200 MPa or more, shock toughness up (4 ~ 6) × 10^6 J/ m^2, Rockwell hardness (HRA) is up to 78 to 90, widely in the high-speed wire rod rolling process, which is much higher than single-slot chilled cast steel or high speed steel rolls.Tungsten carbide is made of Tungsten Carbide Powder and binder phase (such as drilling, nickel, etc.), and then pressing and sintering, regardless of the conditions under cold rolled or hot rolled has excellent wear resistance, tungsten carbide rollers has been widely used in pre-finishing mill and finishing of high-speed wire rod currently. On the performance of tungsten carbide roller in hot-rolling wire rod , the material must meet the following requirements:
Tungsten carbide roller material design
Tungsten carbide roller category
Tungsten carbide roller production process control Carbide Roller,Carbide Ring,Mill of Rolling Line,Steel Wire Rod,Mill Rolling Finish Stand,Mill Roller Groove Type Luoyang Golden Egret Geotools Co., Ltd , https://www.xtchvaf.com
SWL:20-320KNÂ
Mass:29-840kgs
Panama Chock DIN81915 Type C
Product Description
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Surface:     High corrosion-resistance , Mirror or Satin polished, Galvanized
Material:    Stainless steel-AISI316 AISI304 ,alloy casting and carbon steel
Technics :   Precision Cast
Shape:Â Â Â Â Â Â Â Â Oval/Circumference/circle
 Specification:
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Package:
We also provide marinechocks in bulwark mounted type and deck mounted type as followings :
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1. Sufficient anti-fracture strength;
2. Good abrasion resistance;
3. The smooth surface finish;
4. Excellent corrosion resistance, thermal fatigue, thermal cracking performance.
Tungsten carbide roller rings can working in bad conditions , small profile rolling (especially rebar rolling) process conditions is harsher than the high-speed wire rod, and therefore corresponds to the profile rolling ,tungsten carbide rollers recommend using high binder phase carbide.
Pre-finishing all vehicles roller should ensure its high toughness, strength, rigidity and thermal conductivity, followed before considering its wear resistance. When designing each vehicles roller, pre-finishing materials should choose carbide grades of Co, Co- Ni- Cr binder content is high (greater than or equal to 25wt%) , requiring an average WC grain size of coarse (5μm ~ 6μm), to obtain a higher shock toughness, proper strength and hardness. For the finishing of the roller movements, particularly the last two rollers of the finish rolling, which suffered load is small, and high relative velocity of the material to be pressed (80 m / min ~ 120 m / min). In this case, the wear resistance of the roller to be the most important requirements, and must ensure the strength , timpact toughness and hardness of a reasonable match, so the binder of Co / Ni content ratio and the average grain WC control of particle size and other factors must have greater control in front of different pre-finishing rolling roll.
According to the structure of tungsten carbide rollers, it can be divided into solid tungsten carbide roller and composite tungsten carbide roller. Solid tungsten carbide rollers have been widely used in pre-finishing and finishing stands high speed wire rod mill (including fixed reducing the rack, pinch roller rack). Composite tungsten carbide roller is made of cemented carbide and other materials, and it can be divided into tungsten carbide composite roll rings and solid tungsten carbide composite roller. Tungsten carbide composite roll rings mounted on the roller shaft; solid tungsten carbide composite roller will be directly cast in the roll axis to form a whole, a large load is applied to the rolling mill.
Tungsten carbide rollers produced by powder metallurgy method, the key to its process control is the chemical composition of the material and the mixture was prepared, pressed molding, sintering and deep processing and other preparation process parameters.
1. Preparation of starting material (WC focus quality): As the WC raw material and quality control of the use of different levels of quality may fluctuate, resulting in adverse effects on microstructure.
2. Preparation of the mixture: Mixture preparation is the key to the production process of the roller, the roller of failure modes - trachoma, mainly generated by this procedure.
3. Pressing: roller pressing is an important process of the roller mill.
4. Sintering: roller sintering is to determine the final quality of the roller production processes, use of advanced low-pressure sintering technology, HIP sintering technology can greatly improve the performance of roller.
5. Deep processing: deep processing rollers have a greater impact on the quality and accuracy of the roller surface.