| Customization: | Available |
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| After-sales Service: | 6 Months |
| Warranty: | 6 Months |
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Shield machine of turning tool is a kind of advanced equipment for underground tunnel construction, This equipment can do the field operation that not affect any construction on the ground. This is available and best choice for crowd city areas, protect buildings or historic site on the ground.
There have a very big circle blade in the front of shield machine, we have mounting various kind of cutters on the blade, In order to promote stable and long life time of application, We have research and developed special tungsten carbide materials that mainly suitable for tunnel borer machine: With high impact toughness, high abrasion resistance, stable physical ability, wide application field, The appearance of fine workmanship and more.
Product advantages:
1. Wildly used in shield machine.
2. The specification based on the different part of cutters.
3. Easy to install and remove.
4. With high impact toughness, high abrasion resistance.
5. Stable physical ability, wide application field.
6. Top quality and long life time.
7. The appearance of fine workmanship etc.
Quality Inspection:
• Our strict quality control system will testing every batch of the material in density, HRA, TRS and magnetic saturation, test report will be kept in our files.
• After we finished production, we need to test it again before we send them to you, with all mechanical properties.
• We put quality certificates into each carton with all necessary data, if anything is different from our agreement or standard, we guarantee that we will send you the replacement or return the payment.
Shield machine tool is divided according to the cutting principle, it is generally recognized that there are two types of hob and cutting knife (according to different properties of tunnel surrounding rock, different cutting purposes, these two types of tools can be further subdivided). The cutting principle of the hob is mainly relying on the tool extrusion rock, generally used for rock tunnel tunneling.
Hob type tools can also be used when there are large gravel sizes (larger than 400mm in diameter) across loose formations, and the content reaches a certain percentage. In addition, the tunnel geological conditions are complex and changeable, the rock (strength is not too high) and the general soil (or clay or sand) interleave frequently, it is possible to use the hob cutter, that is, in the composite shield machine. The cutting principle of the cutting tool is mainly that when the shield machine advances forward, the cutting tool generates axial shear force (along the tunnel forward direction) and radial cutting force (along the tangent direction of the cutting tool spiral) on the soil of the excavation surface.
Main Grade list
It is very important to select the right grade to match the using purpose, need to find the perfect balance between hardness and bending strength, so we have to consider the physical properties of the processing object, as well as the working condition for tools.
| Grade | Density | Hardness | Bend Strength | Application | |
| (G/Cm3) | (HRA) | (TRS/N/mm2) | |||
| YG4C | 15 | 89.5 | 1800 | Maily used as small buttons for percussion bits and as the inserts of rotary prospecting bits to cut soft, medium-hard formations. | |
| YG6 | 15 | 90 | 1700 | Maily used as the buttons of small and medium-sized percussion bits and as the inserts of rotary prospecting bits to cut soft, medium-hard formations. | |
| YG8 | 14.7 | 88.5 | 2200 | Maily used as the buttons of small and medium-sized percussion bits and as the inserts of rotary prospecting bits to cut soft, medium-hard formations. | |
| YG8C | 14.7 | 88 | 2300 | Maily used as the buttons of small and medium-sized percussion bits and as the inserts of rotary prospecting bits to cut soft, medium-hard formations. | |
| YG9C | 14.5 | 87 | 2400 | Maily used as the inserts and buttons for rotary-percussive bits, coal-cutting bits and tricone bits to cut medium-hard and hard formations. | |
| YG11C | 14.4 | 86.5 | 2450 | Chiefly for the inserts and buttons of heavy rock drill bits and rotary-percussive bits, coal-cutting bits and tricone bits to cut medium-hard and hard formations. | |
| YG13C | 14.3 | 86 | 2500 | Mainly used as the inserts and buttons of tricone bits rotary-percussive bits and heavy rock drill bits to cut medium-hard and hard formations. | |
| YG15 | 14 | 86.5 | 2500 | It is stronger, and is mainly used as the inserts and buttons of rotary-percussive bits, heavy rock drill bits to cut hard and very hard formations. | |
| YG16 | 14.10-14.30 | 87.5 | 2400 | It is mainly used for making cemented carbide substrate tips to be used in PDC cutters for excavating coal and oil field PDC bits. | |
| YG20 | 13.40-13.70 | 85 | 2254 | Mainly for the stamping dies used in the conditions of heavy impact load and large strees. |
Type 1:
Jetvision made tungsten carbide shield cutters are widely used in shell scraper, side scrapers, avulsion cutting, center disc cutters, advance cutting, rip teeth, single-chisel bits etc. We can build all kinds of shapes/design based on your requirement.
1) 100% virgin raw material
2) Customized,We have over 20 years' experience in the shaped tungsten carbide products
3) Various kinds of material grades are available based on customer's application
4) we have professional advanced production line and inspection equipment to ensure high quality products.
5) Advanced technology with precision ground and high polishing process
6) High wear resistance, high hardness and impact toughness
7) Excellent after-sales service
8)We provide excellent after-sales service include technical support and troubleshooting solution.
FAQ:
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