Fabry Parot Etalon is a high-resolution interference spectrometer with wide applications, which include high-resolution spectroscopy, the study of spectral lines with very close wavelengths, such as the isotope spectrum of elements, the hyperfine structure of the spectrum, the small frequency shift in light scattering, the Doppler shift of spectral lines caused by atomic movement, and the internal structure shape of spectral lines.
It can also serve as a high demanding optical filter and a precision wavelength meter. In the laser system, it is often used to narrow the spectral line in the cavity or make the laser system operate in a single mode. It can be used as a bandwidth control and tuning device in broadband picosecond lasers to detect and analyze the spectral components in the laser (longitudinal mode, transverse mode).
Use of etalon and selection of substrate materials
Etalons, when used in transmission mode, have a series of transmittance peaks with periodic frequency spacing and are typically used in telecom for wavelength locking. Etalons are characterized by their Free Spectral Range (FSR) the frequency spacing between peaks and their Finesse which essentially governs the shape of the transmission peaks.
Etalon filters typically consist of a single spacer layer with two reflector stacks on either side.
For FSR values below 1000 GHz, the spacer is usually fabricated from a substrate material (rather than grown in thin film deposition). To achieve etalon quality polishing the parallelism of the substrate needs to be better than 1-5 arc-seconds.
Different substrate materials are chosen depending on the application fused silica is used when the etalon FSR and peak variation with temperature is to be minimized while Si is used when a high FSR temperature coefficient is required for thermal tuning.
Photonchina fabricates custom high quality fused silica and Si etalons at competitive prices with FSR values in the range of 12.5 GHz to 500 GHz.
Types of Etalon
The optical etalon can be a single-piece structure with parallel reflective surfaces, the solid-state etalon made of fused silica material, or an air-gap structure using a Fabry-Perot cavity double-reflective mirror, i.e., the air-gap etalon.
1. Solid Etalon:
Photonchina Specifications:
Material: H-K9L/BK7, Quartz Glass
Size: 24-20-52mm,Total Length:136.5mm
Packing: 1unit/box,box can be brown box or color box,10units/carton
OE number:B00425400D B00425600D B00525400 B00525600 B00526600D K99999112 KK33122510 KK16822510
Item No.:MZ-5023
We have developed more than 3,000 varieties of C.V. Joint and 1000 varieties Drive Shaft.Product categories cover 90% .
We have obtained ISO9001,TS16949 certification to produce the high quality products
GUIDE BUSH OUTER
Material: 45#
Weight: 0.58kg
Manufacture process: Machining
Description: Mold parts, and guide pillar, play the role of a guide, generally fit clearance is small, within 0.05 mm;In general use in the mold or some mechanical, to ensure the accuracy of the movement.
roll shaft bearing
Material:ZG30Mn
Weight:3-10t
Process:sand casting
Description: the main parts of coal grinding machine
Function: Roller shaft bearing is the main accessories of grinding machine, connection roller cover and the bearing seat, and easy to open the shaft bearing and maintain it after open the roller cover
1.The super-high quality and mass remarkably surpass the domestic first-class factories.
2.The beam guide and ram guide are handled by supersonic frequency induction hardening (HRC�?�50) while the sliding surface of guide is treated with sticking plastic (including inclined veneers and pressure plate). The precision of the product can be maintained for a long time and the cycle for big repair can be extended as long as more than 10 years.
3.EXcellent casting comes from the same factory that the domestic big factories utilize (all are in type of HT300) and the artificial heat ageing is carried out. The casting can never be carried out with weight-reducing treatment, the weight of the whole machine accords with the standard one.
4.five-angle tool carrier adopts high-precision rat gear for positioning and for all 120 pieces, super-strong stiffness. (the traditional five piece positioning plate can be compared with it)
5. 2 axial digital display is taken as the standard confirmation (4 axial digital display type will be exported)
6.The electrics adopt Japan Omron PLC control and the electric components utilize the components with ultra-high quality , specification (CE standard) assembly process, in addition, the electrics of the whole machine owns super-high reliability.
7.ELectric rotary valve, Grade 16 machinery variable speed make the device convenient, smart and reliable.
8.High-precision gear grinding gear and gear grinding spiral bevel (Grade 6 precision) are featured with low noise and stable operation.
9.JB/T4116-96 precision test standard of vertical lathe is performed
JB/3665-96 technical condition of vertical lathe is performed.
10.Advanced and perfect processing and assembly process forge excellent quality.
11.Accessory configuration is complete and only the user prepares for the knife and measuring tool, the operation can be started immediately. Perfect after-sales service (pre-sales, in-sales, after-sales, installation, debugging, training and maintenance etc.) in addition, one-year quality assurance service is granted.
12.Optional configuration: rolling working platform, Germany Mecano button station, heightening lathe and prolonging ram and square ram etc.
C5126E Single Column Vertical Lathes
1.The super-high quality and mass remarkably surpass the domestic first-class factories.
2.The beam guide and ram guide are handled by supersonic frequency induction hardening (HRC�?�50) while the sliding surface of guide is treated with sticking plastic (including inclined veneers and pressure plate). The precision of the product can be maintained for a long time and the cycle for big repair can be extended as long as more than 10 years.
3.EXcellent casting comes from the same factory that the domestic big factories utilize (all are in type of HT300) and the artificial heat ageing is carried out. The casting can never be carried out with weight-reducing treatment, the weight of the whole machine accords with the standard one.
4.five-angle tool carrier adopts high-precision rat gear for positioning and for all 120 pieces, super-strong stiffness. (the traditional five piece positioning plate can be compared with it)
5. 2 axial digital display is taken as the standard confirmation (4 axial digital display type will be exported)
6.The electrics adopt Japan Omron PLC control and the electric components utilize the components with ultra-high quality , specification (CE standard ) assembly process, in addition, the electrics of the whole machine owns super-high reliability.
7.ELectric rotary valve, Grade 16 machinery variable speed make the device convenient, smart and reliable.
8.High-precision gear grinding gear and gear grinding spiral bevel (Grade 6 precision) are featured with low noise and stable operation.
9.JB/T4116-96 precision test standard of vertical lathe is performed
JB/3665-96 technical condition of vertical lathe is performed.
10.Advanced and perfect processing and assembly process forge excellent quality.
11.Accessory configuration is complete and only the user prepares for the knife and measuring tool, the operation can be started immediately. Perfect after-sales service (pre-sales, in-sales, after-sales, installation, debugging, training and maintenance etc.) in addition, one-year quality assurance service is granted.
12.Optional configuration: rolling working platform, Germany Mecano button station, heightening lathe and prolonging ram and square ram etc.
china coal 0001
Arc Plate Net Shell Support
Keywords: Net Shell Support, Stainless Steel Support, Steel Supports Price
Introduction of Arc Plate Net Shell Support
Supporting of soft rock tunnel excavation has been one of the key technical problems which affects the further development of coal industry production and construction of our country . Deep mine ground pressure intensity is high, under the condition of mining influence and impact ground pressure and strata control is especially difficult, thus support system is more and more strengthened, such as the need to reduce the frame from u-shape set, strengthen the link rod, and even to use U36 steel;spray the anchor net supporting to reinforced by steel arch, or and anchor rope combined support, surrounding rock grouting, etc; Although this can achieve certain supporting effect, but support cost is very high. Therefore, China coal group design to create a new type of flat net shell components, the main supporting characteristics of arc plate net shell components summed up as: "while digging, while supported edge, "before soft to hard", enough stiffness, process simple,low price."
Characteristics of Arc Plate Net Shell Support
1,"While digging, while supported edge",timely support
Arc Plate Net Shell Support can use waste rock filling, grey package after wall, concrete precast slab, such as filling, network frame and the tunnel contour quickly close to stick, while digging, timely support, so that on the one hand can make the support resistance of support was able to play in time, to timely reinforce the surrounding rock and to work under the stress state in three; On the other hand, have the effect of slow pressure, pressure, lead to the uniform support along the perimeter stress, is in good working condition.
2,Arc Plate Net Shell Support has enough "rigidity"
3,"Just moderately soft, before soft to hard".
Arc Plate Net Shell Support force has a complex ingredients: expansion and creep of rock mass, reduce the strength of long, crushing of rock mass adhesion coefficient reduced values, etc., all show the macroscopic displacement of rock mass and any rigid support to prevent displacement will be entirely itself in disadvantage. Therefore, the stability of the laneway to end support, work together to complete of the surrounding rock. Reticulated shell scaffold, while under high in-situ stress reaction in surrounding rock, making convergence of surrounding rock in supporting under the control of convergence, by stent supported edge, the edge of broken rock mass convergence pressure unceasingly, forming a stable bearing ring, together with stents to assume the role of in-situ stress.
The scalability of Arc Plate Net Shell Support comes from two aspects:
(1) the contact of the spatial grid steel supports and surrounding rock itself has certain yielding;
(2) the junctions between the reticulated shell scaffold piece and piece of wood plate.
china coal 0001
U-channel Tunnel Steel Support
Keywords: U-channel Steel Support, Tunnel Steel Support, Steel Support For Sale
Introduction of U-channel Steel Support For Coal Mine
U channel steel support cross section is shaped like the letter "U" in English. National production of u-shape cross-section shape, geometric parameters and material is different, at present China''''s production of u-shape model mainly include stepping, U25, U29, U36 these four. The stepping and U25 waist position; U29, U36 belongs to the ear. Stepping up the carrying capacity is very low, now rarely production.
U channel steel support with high initial supporting force, supporting intensity big, easy to install and is not easy to deformation, so often used in the manufacture of roadway yielding metal stents, mine, mine roadway secondary supporting of roadway, and mountain tunnel support support purposes
Use, effectively reduce the roof caving u-shape set, help such as accidents, safe and reliable, and enhances the stability of the mine ventilation system. Choose u-shape flexible support, better solved the difficult problem of the excavation support
Structure of U-channel Steel Support For Coal Mine
1.Top Beam
Top beam is circular arch, its amount depending on the cross section of roadway with different sizes, support force, transportation conditions, section 1 and section number.
2.Column leg
There are three kinds of back leg , one kind is upside for circular arc form, for straight line at the bottom; The second is all for the curved shape, and only one radius of curvature; The third is all for the curved shape, but there are two curvature radius. Back leg in welding under the base, the base of large plate on the hard and soft;
3.Connection parts
Fitting is a support section and internode card device, can the internode connection effect, can also be connected the two compression steel joint parts, provide pre-tightening force, make the u-shape between friction, thereby ensuring that the arch has a certain resistance and certain drop-off.
4.Rod between support
Rod between support is to enhance the relative stability, the support bracket from longitudinal connection, form a whole.
5.Back-up material
Back-up material is u-shaped steel support between supports and surrounding rock filling material, improve the stress of the support, to improve the bearing capacity and maintain the stability of surrounding rock.
Characteristic of U-channel Steel Support For Coal Mine
1,Stand high pressure , support long time, easy to installation and not easy to be out of shape
2,compared with other rigid support , U-shaped steel support has a scalable and reliable carrying capacity to adapt to load and deformation of soft rock.
3,U-shaped steel support bracket support cross back high utilization convenient small amount of maintenance.
4,U3 steel support recycling reuse rate, reduce prop use, very obvious envir
Full automatic mold free eps foam grooving package machine
Mold free Hot wire cutting machine is also called eps grooving machine,mold free package machine,it is for eps foam cutting/package.Full automatic mold free package machine are designed with sectional cutting hot wire for single pcs of package product and clamps on two sides of eps panels which can drive it forward.
It uses no mold different with eps box package machine which use mold. The high temperature hot wire can be made in to different shapes for cutting work.The temperature are adjustable which can be applicable for different density materials and hot wires are with positioning device which can work with uniformity for all cut products.
1. Frame place are adjustable for application of different foam thickness.
2. Up and down positioning device are good for work uniformity.
3. Single and entire control on rotary cut heads are available.
4. The range of each hot wire are adjustable.
5. Hot wire shape are adjustable and heating speed are fast .
6. Pneumatic control on going up and down for hot wires .
7. Hot wire rotary are controlled by speed regulation motor.
8. Hot wire temperature are adjustable.
9. Easier positioning control panels.
Application
Eps foam column hollow,round hollow,square,rectangle,circular hollow,abnormal shape etc.
Staples, industrial staples
Staples
1.Fine wire, medium wire, heavy wire staples
2.Narrow crown, intermediate crown, standard crown, wide crown, c crown, d crown.
3.Galvanized wire with clear coated, color glue coating.
4.Point: chisel, divergent
Flap wheel with shaft
Characters:
It is radial and fan-shaped which make use of flowing adhesive to make the lamellate of abrasive-colth adhered.
Application:
Grind the surface of non-metal and metal. Lap the hole and surface of work-piece grind and lap flexible contoured surface, especially and convex surface profiles.
Abrasive flap discs
Applications by different abrasive:
1) aluminium oxide, symbol: a
Suitable for iron, mid steel, welding rods, cost iron aluminium, non-ferrous metals and wood.
2) silicon carbide (disc in black color ), symbol: c
Suitable for marbles, stones, building materials, hand materials, glass.
3) zirconium, symbol: z
4) t27/t29 is available.
Suitable for heavy deburring and finishing on metals. High performance.
These discs do not contain metal iron and/or iron compounds.
Dimension(mm) max.Speed abrasive available grit available backing available
100x16 15200 a, z, c 40 - 400 fibre glass, nylon
115x22 13300 a, z, c 40 - 400 fibre glass, nylon
125x22 12200 a, z, c 40 - 400 fibre glass, nylon
150x22 10200 a, z, c 40 - 400 fibre glass, nylon
180x22 8500 a, z, c 40 - 400 fibre glass, nylon
