Active Member
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[China]
Address: Building A3,Minor Enterprises Promotion Park,Huanghe Road(N),Tianyuan District,Zhuzhou,Hunan,China.
Contact name:Dora
Zhuzhou Zonco Sinotech Wear-resistant Material Co., Ltd. |
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High Precision Bushings, Tubes and Guides
Pre-fabricated High Precision Bushings and Tubes in Steel and Tungsten Carbide
Prefabricated Bushings and Tubes in Steel and Tungsten Carbide
High precision hole polish
Outer-Diameter and Length raw
Material: Steel and Tungsten Carbide
Zonco produces small and high precision bushings and tubes.
Inside geometry is available in cylindrical, conical design, with cylindrical relief or custom designed characteristics. If required, inside bores can be produced ultra precise within tolerances less than 2 micron, polished or ground.
For standard products or custom design you can select from many different materials with excelent properties. Our prefered materials are:
Tungsten Carbide, steel, hardened steel, powder metallurgical steel and high speed steel. See also our Materials Overview...
Supplying different industries for years adds to our experience to be your partner for bushings.
Geometrical specifications and tolerances:
High precision hole polish. Tolerance: +/-0.001 mm
High precision Outer-Diameter. Tolerance: +/-0.001 mm
High precision concentricity TIR. Standard: 0.003 mm / Special: 0.002 mm
Cobalt Binder Grades:
| Grade | Binder(Wt%) | Density(g/cm3) | Hardness(HRA) | TRS(≥N/mm2) |
| ZK6 | 6 | 14.8 | 90 | 1520 |
| ZK6X | 6 | 14.9 | 91 | 1450 |
| ZK6A | 6 | 14.9 | 92 | 1540 |
| ZK8 | 8 | 14.7 | 89.5 | 1750 |
| ZK12 | 12 | 14.2 | 88 | 1810 |
| ZK15 | 15 | 14.0 | 87 | 2050 |
| ZK20 | 20 | 13.5 | 85.5 | 2450 |
| Common Alloy Grades, Ghysical Mechanical Properties And Recommended Application | |||||||
| Grade | WC% | Co/Ni % | Physical and mechanical properties | Grain size (μm) | Recommended application | ||
| Density (g/cm3) | TRS (N/mm2) | Hardness (HRA) | |||||
| ZG01 | 100 | 0 | 15.3-15.5 | 1200 | 95.5 | 0.3 | Ultra-high hardness, high wear resistance, anti-corrosion, with certain anti-destructive ability |
| ZG04X | 96 | 4 | 15.0-15.2 | 1600 | 92.8 | 0.8-1.0 | Suitable for drawing die, non-ferrous metal wire drawing and wear-resistant parts |
| ZG06 | 94 | 6 | 14.8-15.1 | 2500 | 90.0 | 1.2 | Good abrasion resistance, good compression resistance, suitable for wear-resistant parts that resist abrasion and high pressure. |
| ZG06X | 94 | 6 | 14.8-15.1 | 2400 | 91.5 | 1.0 | Superio wear resistance,good comprehensive properties,suitable for making non-standard structure components with higher wear resistance. |
| ZG06A | 94 | 6 | 14.8-15.1 | 2150 | 92.5 | 0.6-0.8 | |
| ZG08 | 92 | 8 | 14.6-14.9 | 2700 | 89.0 | 1.2-1.6 | Good general performance, used for general wear parts, molds, general tools, etc. |
| ZG10.2 | 90 | 10 | 14.3-14.6 | 3800 | 91.7 | 0.7 | Good general performance, suitable for casing and oil nozzle products |
| ZG11 | 89 | 11 | 14.3-14.7 | 2800 | 88.5 | 1.2-1.6 | Anti-wear, anti-erosion, good comprehensive mechanical strength, suitable for wear-resistant parts in the petroleum, chemical and mechanical industries. |
| ZG12X | 88 | 12 | 14.2-14.5 | 3000 | 89.5 | 1.0-1.2 | Anti-erosion, good comprehensive mechanical strength, suitable for impact-resistant wear-resistant parts, molds, and roller rings. |
| ZG15 | 85 | 15 | 13.8-14.2 | 3000 | 86.5 | 1.2-1.6 | |
| ZG15X | 85 | 15 | 13.8-14.2 | 4500 | 89.0 | 0.7 | Excellent wear resistance and toughness,it is suitable for making integral stamping dies, anti-vibration toolholders, etc. |
| ZG20 | 80 | 20 | 13.4-13.8 | 3100 | 85.0 | 1.0 | Excellent wear resistance and toughness |
| ZN06 | 94 | 6 | 14.5-14.9 | 2000 | 90.0 | 1.2 | Non-magnetic alloy, suitable for sealing ring, non-magnetic wear-resistant parts and corrosion-resistant parts. |
| ZN09 | 91 | 9 | 14.3-14.6 | 2300 | 89.0 | 1.2-1.6 | |
| ZN11 | 89 | 11 | 14.0-14.3 | 2600 | 88.0 | 1.2 | |
