Reserve calculation method
(5) Horizontal section method
The horizontal section method is essentially a type of parallel section method, except that its section is not a vertical plane but a horizontal plane.
Envisions a series of equidistant tangential horizontal plane and the coal layer, is obtained a series of horizontal section different elevations seam, then, calculates adjacent, coal reserves and the volume between the two lower horizontal section.
In the formula, V is the coal seam volume between the upper and lower adjacent horizontal sections; S1 and S2 are the areas of the coal seams on the upper and lower adjacent horizontal cut planes respectively; h is the vertical distance between the upper and lower adjacent horizontal cut planes; d is the coal seam bulk density.
This method is suitable for the calculation of reserves in inclined thick coal seams for open pit mining. The advantage is that the reserves can be calculated and calculated separately according to the height of the open-pit mining stage, which is convenient for the mine design and mining department to utilize.
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FAQ:
Q1: What tolerances can you achieve for Automotive Interior Plastic Injection Mould?
There is not a given set of tolerances that fits all processes and materials. In every case, the final tolerances on your part will depend on a number of factors, including but not limited to:
- Part size
- Design geometry
- The number, type, and size of features
- Material(s)
- Surface finish
- Manufacturing process
We will review your design and provide a design for manufacturing review, pointing out any areas where we may not be able to achieve your desired tolerances. It`s helpful to us if you can specify which areas in your design have critical tolerances that must be met and which can be slightly modified if needed to reduce time and costs involved.
Q2: How do you ensure your Automotive interior plastic mould quality?
In order to deliver high-quality parts every time, we`ve instituted the following steps to ensure you get parts that meet and exceed your expectations.
- A full design for manufacturing (DFM) review upon initial inquiry. This will be performed by our skilled engineering team, who will alert you to any issues before work begins.
- All incoming material (metal and plastic) is 100% inspected using our in-house metrology equipment.
- In-process and first article inspection.
- Comprehensive final inspection with a full report.
Q3: Is the lead time in working days or calendar days?
Lead times are quoted in working days. As per our terms and conditions, quoted lead times commence only after completion and confirmation of design for manufacturing review and the beginning of actual production.
Q4: How long does a quotation take?
In most cases, we respond within a couple of days of receiving an RFQ. However, there may be situations when we must source material from an external supply and therefore the quotation may be delayed accordingly.
Q5: What is the difference between a multi-cavity mold and a family mold?
A multi-cavity mold has multiple cavities of the same part; a family mold produces a set. For instance, for an electronic enclosure, you may need a front, back, battery door, and a button. Those could all be molded at once in a family mold.
Q6: How long does it take to build an Automotive air conditioner injection mold?
Depending on complexity and our tool room load, it can range from 2 to 12 weeks.
Q7: Can I modify the mold after the first run?
We can modify our steel molds by additional machining, fill-in welding, welding in additional material, or inserting a replacement feature, for a reasonable cost. If the changes are too great, however, producing a new mold may be more cost-effective than reworking the existing one.
Automotive Interior Plastic Injection Mould
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