Industry Information_Industry Information_Zhenping County Hongli Mining Co., Ltd.

11-18 

Internal quality standards for domestic process boards

Internal quality standards for domestic process boards Shaanxi Zhenping County Hongli Mining Co., Ltd. 1. Board surface: The surface of the slate as a natural stone has a slight chromatic aberration and sporadic small point sulphur iron spots and water extraction lines are normal. The surface of the board is required to be flat, and there must be no bent plates or slabs, and there must be no broken white gold wire and sand-sanding lines, water-drawing lines and penetrating smelting pyrite or depressions or bulges. There must be no penetrating cracks inside; 2. Thickness error range: 1) The thickness of the small panels (100x100mm, 150x150mm, 200x200mm, 250x100mm, 250x150mm, 250x250mm, 300x100mm, 300x150mm, 300x200mm, 400x150mm, 400x200mm, 400x250mm) is 4-6mm, accounting for about 90% of the total number; because it is artificially divided, The thinnest shall not be less than 3.5mm, the total number of slate below 4mm thickness (4 – 3.5mm) shall not exceed 5%; the slate exceeding 6mm thickness (online no more than 6.5mm, ie 6 - 6.5mm) shall not exceed the whole 5% of the quantity; 2) The large thickness of the large panels (450x250mm, 500x250mm, 500x375mm, 600x300mm, 600x450mm, 610x305mm, 610x460mm) is 5-7mm. If the buyer has special requirements, it can be made according to 6-8mm or 7-9mm. 3) Large panel 650x325mm, 650x388mm thickness is generally 6-8mm, if the buyer has special requirements, it can be made according to 7-9mm. 4) The large panel 5-7mm thickness error standard is as follows: The thickness range of 5 – 7mm accounts for about 90% of the total number; Less than 5mm (4.5mm in thickness, ie 5-4.5mm) shall not exceed 5% of the total quantity; thickness above 7mm (7.5mm in thickness, ie 7 – 7.5mm) shall not exceed 5% 5) The large panel 6 – 8 mm thickness error standard is as follows: The thickness range of 6 – 8mm accounts for about 90% of the total number; Less than 6mm (5.5mm thick thickness, ie 6 – 5.5mm) shall not exceed 5% of the total quantity; above 8mm thickness (upper thickness of 8.5mm, ie 8 – 8.5mm) shall not exceed 5% 6) The large panel 7 – 9mm thickness error standard is as follows: The thickness range of 7 – 9mm accounts for about 90% of the total number; Less than 7mm (6.5mm thick thickness, ie 7 – 6.5mm) shall not exceed 5% of the total quantity; above 9mm thickness (9.5mm thick thickness, ie 9 – 9.5mm) shall not exceed 5% 3. Dimensional Tolerance of Length and Width: As a process board, the length and width are generally left with a margin of 10mm – 15mm for edge trimming when processing finished products. If the buyer asks us to machine to the size (fixed length) at the factory, the allowable tolerance for length and width is +/-1mm. 4. Angle error: four angles of 90°, the angle error on the long side is within 1°, and the angle error on the wide side is within 0.5°; 5. For the technical board with special requirements for customers, the internal quality standard should be separately indicated. Wood box (no top cover) quality requirements: 1. The middle column of the outer wooden strip of the wooden box must be strong, the width of the wooden strip shall not be less than 60mm, and the thickness of the wooden strip shall not be less than 20mm. The width of the cross strip and the border strip shall not be less than 50mm, and the thickness shall not be less than 15mm; and the angles of the two ends of the cross strip shall be respectively resisted on the wooden strip of the column and the wooden strip of the frame, and there shall be no gap; the number of nails at the intersection Not less than 3, and the triangle is staggered into the wooden strip to ensure stability and strength, and the two nails are to be straightly inserted into the inner wooden strip of the frame; 2. The width of the iron wrap angle shall not be less than 45mm, and at least 3 nails shall be nailed at each end. Two of the nails shall be straightened into the inner wooden strip of the frame; the other nail shall be directly nailed into the top of the wooden strip outside the frame. 3. The height of the bottom sleeper is not less than 60mm; 4. The bottom of the wooden box must be flat and strong. Packing method: Calculate the inner diameter and width of the wooden box according to the number of layers installed on the side or the vertical. Each row and each layer should be placed in parallel and two 3mm thick thin strips are stuck to prevent bumping and unnecessary Missing corners. The slate at the time of packing must be complete with 4 corners. Damage during transportation: If the damage, corners and bumps caused by the transportation to the buyer's warehouse are not more than 0.5%, they shall be borne by the buyer. If the damage, corners and bumps caused by the transportation to the buyer's warehouse exceed 1%, the two parties should negotiate and find the cause of the damage to avoid subsequent dama

11-18 

Internal quality standards for domestic straight floor:

Internal quality standards for domestic straight floor: Shaanxi Hongli Mining Co., Ltd. 1. Board surface: The surface of the slate as a natural stone has a slight chromatic aberration and a point of sulphur iron point, water extraction, sand layer and platinum line are normal, but there is no broken sand layer and platinum line. The surface of the board is generally flat and must not have large bismuth pyrite or large areas of depressions or bulges. It must be guaranteed that the four corners of a face are complete. 2. Thickness error range: 1. Thickness of 10 – 15mm straight floor (300x150mm, 300x300mm, 400x200mm, 600x300mm, 800x400mm, 600x600mm) thickness of 10 – 15mm accounts for about 90% of the total number; because it is artificially divided, the thinnest is not less than 9.5mm, The total number of floors below 10mm thickness (10 – 9.5mm) shall not exceed 5%; the slate exceeding 15mm thickness (upper line not exceeding 15.5mm, ie 15 - 15.5mm) shall not exceed 5% of the total quantity; 2. Thickness of 15 – 20mm straight floor (300x300mm, 400x200mm, 600x300mm, 800x400mm, 600x600mm) thickness of 15 – 20mm accounts for about 90% of the total number; because it is artificially split, the thinnest is not less than 14.5mm, overall low The number of floors at a thickness of 15 mm (15 – 14.5 mm) does not exceed 5%; the floor thickness greater than 20 mm (upper line does not exceed 20.5 mm, ie 20 - 20.5 mm) does not exceed 5% of the total number; 3. Thickness of 20 – 30mm straight floor (300x300mm, 400x200mm, 600x300mm, 800x400mm, 600x600mm) thickness 20 – 30mm accounts for about 90% of the total number; because it is artificially split, the thinnest is not less than 19.5mm, overall low The number of floors with a thickness of 20mm (20 – 19.5mm) shall not exceed 5%; the slate of more than 30mm thickness (upper line not exceeding 30.5mm, ie 30 – 30.5mm) shall not exceed 5% of the total quantity; 3. Dimensional tolerances for length and width: The allowable tolerance is +/- 1 mm. 4. Angle error: four angles of 90°, the angle error on the long side is within 1°, and the angle error on the wide side is within 0.5°; 5. For the quality of the process board with special requirements, it should be agreed and specified according to the customer's requirements. Wood box (no top cover) quality requirements: 1. The middle column of the outer wooden strip must be strong, the width of the wooden strip shall not be less than 60mm, and the thickness of the wooden strip shall not be less than 20mm. The width of the cross strip and the border strip shall not be less than 50mm, and the thickness shall not be less than 15mm; and the angles of the two ends of the cross strip shall be respectively resisted on the wooden strip of the column and the wooden strip of the frame, and there shall be no gap; the number of nails at the intersection Not less than 3, and the triangle is staggered into the wooden strip to ensure stability and strength; 2. The width of the iron wrap angle shall not be less than 45mm, and at least 3 nails shall be nailed at each end. Two of the nails shall be straightened into the inner wooden strip of the frame; the other nail shall be directly nailed into the top of the wooden strip outside the frame. 3. A 5 mm thin wooden strip should be placed in parallel between each layer of slate floor to reduce damage. A thin strip of 5 mm should be placed between each floor to avoid bumping and falling corners during transportation. 4. The height of the bottom sleeper is not less than 60mm; 5. The crate floor must be flat and strong For details, please contact He Jianjun, Hongping Mining Co., Ltd., Zhenping County, Shaanxi Province 13609293980/15319755273

11-18 

Internal quality control and management

The internal quality control and management system is very important and plays a key role in ensuring the company's entire production and operation system. For natural stone such as slate, there are various natural defects such as chromatic aberration, water extraction, sand layer, platinum wire, sulphur iron point and bump. Because of the different uses, customer needs and quality requirements are also different. In addition, long-distance transportation is likely to cause bumps and breakage, which may lead to disputes in production, processing, packing, and delivery. Internal quality control and management is to avoid disputes, improve quality, and make the company embark on a sound development path. The entire quality control and management is not isolated. It must be carried out in every aspect of production: material selection, cutting, splitting, selection, (paneling, edge-cutting, drilling) packing, shipping and delivery. The duties of the inspection department: The inspection department is the law enforcement department and supervisor of the company's entire production and operation. Implement the industry's customary fuzzy standards and make them clear. Inspectors should be familiar with the use of slate in various varieties and follow the process of processing and production to eliminate as many quality accidents as possible. It is independent of production and sales, and acts as a link and bridge. In principle, it is more necessary to connect the various production links flexibly, and to find problems in time and propose rationalization to avoid the company suffering greater image loss and economic loss. Please refer to the tentative “Internal Quality Standards for Domestic Sales Process Boards”, “Internal Quality Standards for Domestic Sales Floors”, “Internal Quality Standards for Exported Tiles” and welcome reasonable suggestions. Shaanxi Zhenping County Hongli Mining Co., Ltd.

11-18 

Internal quality management standards for export tiles:

Inner Quality Management of Exported Tiles of Hongping Mining Co., Ltd., Zhenping County, Shaanxi Province: Basic quality requirements: 1. Board quality and color difference: The block material must be the fine quality of the stone pier which is cut off at least 5 cm of the oxidized skin. The designated material of the tile mining site is divided into blocks and stone piers of different mining periods. Slate can not be mixed. 2. The surface of the board is required to be flat, and there must be no curved plates or rocking plates. There must be no platinum wire, sand wire, water ripple and penetrating pyrite. 3. There shall be no internal cracks and penetrating cracks; 4. Angle tolerance: four angles of 90°, the angle error on the long side is within 1°, and the angle error on the wide side is within 0.5°; 5. Size error: length and width error: +1mm - 0mm, 6. Thickness: between 5-7mm: Large panels 650x533, 650x350, 650x355, 600x300, 500x250, 500x375, 450x300, 450x250 shall not have slate below 5mm thickness; small panels 400x250, 400x200, 300x200 shall not have a thickness of less than 4.5mm (5-4.5) And cannot exceed 5%; 7. Complete corners: 4 corners are required. If there is a corner, the corners should not be larger than the long face 20mm x 10mm wide, and the number of notched tiles should not exceed 5%. (When punching, try to make a corner Stay in the small head of the slate.) If there are two corners and the corners are at one end of the board, try to keep the two corners in the small head and leave the hole in the hole. If the missing corners are at the two ends of the board and the missing angle is greater than 20x10mm, it is a waste product and needs to be picked out. 8. Hole position: The large surface is the back side and the small surface is the front side. Two holes are drilled from the back side of the slate to the front side. The hole diameter is 4mm. The distance between the center of the hole and the left and right sides is 30mm, and the distance from the head is 245mm. Not more than 1mm; Wooden box size: 1. The inner diameter of the package is 1040mm, the inner diameter is 605mm, the inner diameter is 605mm, and the outer diameter is not greater than 1140mm. 2. The middle column of the outer wooden strip must be strong, the width of the wooden strip shall not be less than 70mm, and the thickness of the wooden strip shall not be less than 25mm. The width of the cross strip and the border strip shall not be less than 60mm, and the thickness shall not be less than 20mm; and the angles of the two ends of the cross strip shall be respectively resisted on the wooden strip of the column and the wooden strip of the frame, and there shall be no gap; the number of nails at the intersection Not less than 3, and the triangle is staggered into the wooden strip to ensure stability and strength; 3. The width of the iron wrap angle shall not be less than 45mm, and at least 3 nails shall be nailed at each end. Two of the nails shall be straightened into the inner wooden strip of the frame; the other nail shall be directly nailed into the top of the wooden strip outside the frame. 4. The height of the bottom sleeper is not less than 60mm; 5. Wood crate wood should be selected as hard material as the material, and the surface must not have insect eyes and bark; Packing method: Large facets are loaded in one direction; Two 3 mm thin wooden strips should be placed in parallel between each layer of slate floor to reduce damage. Each row of slabs should be placed with 3 mm thin wooden strips up and down to avoid bumps and corners during transportation. Depending on the size of the board, some are vertically stacked with 3 rows, and some sizes of the board are placed upside down with 3 layers. Taro brush system: 1. The surface of the wooden box can be brushed on one side; the number of the wooden box, the size and the number of pieces are respectively printed on the outer horizontal strip from the left to the right; 2. Brushed on the skewed wood strip

11-18 

Slate classification and comprehensive introduction of ore body

Slate, also called shale, is a type of sedimentary rock. It is divided into shale slate, siliceous slate and calcareous slate according to its ore-forming conditions and its constituents. 　　First, the shale slate is introduced: when the ancient crust lava is erupting, the high-temperature burning magma also melts the surrounding soil or muddy rock, and integrates it into the magma and grows into a slate that can be divided. The color of shale slate is generally yellow, brown and rust. Mainly distributed in Baoding, Zhangzhou, Xingtai and other regions in Hebei. The strength is poor, the enthalpy is not strong, and it is easy to break. 　　Siliceous slate: During the intense eruption of the ancient crust, it is surrounded by the estuary of ancient and inland rivers, causing a large number of river sand and beach sand to be melted at high temperature (metallogenic material) and deposited in the rock formation. The main colors are: black, cyan, cyan, pink, brown, white, brown, green (also divided into green, light green and dark green), rust color. It is mainly distributed in the Taihang Mountains: Zuoquan in Shanxi, Mancheng, Yixian and Xingtai in Baoding, Hebei, and Fangshan in the Beijing area of the Yanshan Mountains. 　　Calcareous slate: During the very intense eruption of ancient crust lava, the surrounding calcareous rocks are also melted and deposited in the rock formation. The main colors are black, gray, cyan, cyan, light green and green stripes. , rust color. It is mainly distributed in the Qinling and Bashan Mountains, from Hanzhong, Ankang (Zhenping, Pingli, Yi, Ziyang, Xunyang, Hanyin Shiquan) in Gansu, Sichuan and Shaanxi to the Shiyan area of Hubei. It is characterized by stable ore-forming conditions and large scale. The same color ore body is stable and the color difference is very small. 　　Calcareous slate siliceous slate muddy slate 　　1) Metallogenic conditions: Calcareous rock melting Siliceous rock melting Mudstone melting 　　2) Reserve size: huge, sporadic, huge 　　3) Rock formation uplift: unsqueezed extrusion, squeezed, squeezed 　　4) Ore body stability: stable, unstable, unstable 　　5) Mining method: open pit mining, open mining, open pit mining 　　6) The degree of separability: good, poor, good 　　7) Material extraction rate: 40% or more 2%-5% 3%-5% 　　8) Yield rate: 50% or more 60% 25%-40% 　　9) Stone color difference: very small color difference, large color difference, great color difference 　　10) Surface processability: Good Good Very poor 　　11) Anti-bending performance: good, excellent, very poor 　　12) Stone density: 2.65kg/m3 2.70/m3 2.55-2.70/m3 　　instruction manual: 　　1. The rock formation is squeezed during the ascent process, causing the formation to fracture or other rock formations to be cut. It is not possible to open-pit mining on a large scale. It can only be used in the way of mining, the mining volume is small, the yield is not high, and the mining cost is extremely high. 　　The rock formation was not squeezed during the ascent process, and the rock formation remained intact, reflecting the complete rock ore body of the entire mountain. Large-scale open-pit mining can be achieved, and the rate of finished products during cutting and processing is extremely high. (Zhenping County Hongli Mining Co., Ltd. details the black-gray calcareous slate of He Jianjun 13609293980/15319755273 fully meets the characteristics of the above high-quality mine resources) 　　2. The rate of take-up is an indicator of stripping from rock to cutting into a block. The rate of finished products from cutting to cutting to commercial use. Resource Reserve X Material Rate X Yield = Finished Product Output 　　3. Items 1) to 4) in the above table are geological conditions; 　　Items 5) to 8) are machinable processing properties; 　　Items 9) - 12) are physical properties. 　　Welcome to consult He Jianjun, Hongping Mining Co., Ltd., Zhenping County, Shaanxi Province 13609293980/15319755273

11-18 

Slab stone board and tile product inspection method

Process board: divided into process board board and process board finished board, the factory price is calculated in square meters according to the size of the single piece (including the enlarged size). 　　Process board 　　It is used to make plate coasters and decorative pendants, etc., and the blocks are cut to a certain size by the cutting machine (the amount of magnification is generally about 10mm, and the factory outlets are calculated according to the volume size. The tolerance is generally Between +2 / -2 mm), thickness 4-6mm, 5-7mm; 　　Conventional requirements for the board surface: the board body is flat, at least one face and four corners are complete, there is no large area of pyrite bulge and pit, no white gold wire and sand line (layer) causing damage, angle error: rectangle The angle error on the long side of the board is 1°, and the angle error on the wide side is 1°. 　　Process board board inspection: 　　Packing method inspection: 　　Since the process board is required by the buyer for secondary processing, as long as there is no obvious dimensional error and board defects. Mainly how to control and reduce damage. Ways to reduce damage: increase the thin strips between each layer of the board, each board is clamped with thin wood strips. 　　Inspection of wooden crates: refer to the requirements for wooden crates. 　　2. Process board finished board: board quality, size requirements and reference outlet tile 　　Tile board: divided into domestic tile and export tile, the factory price is calculated in square meters according to the single piece size. 　　Export tile: The tile for export is used for roof waterproofing, so the penetrating inner and sand layer, platinum wire, and Daxie pyrite are to be selected. Basic quality requirements: 　　Plate quality and color difference: the block material must be the fine quality of the stone pier that cuts off the oxidized skin at least 5 cm. The designated slabs of the different mining periods of the tile mining site and the slabs of the stone pier Do not mix. 　　Can't have obvious chromatic aberration 　　The surface of the board is required to be flat, and there must be no bent plates or rocking boards, and there should be no platinum thread, sand-shading line, water-drawing pattern and penetrating pyrite ore; 　　There shall be no internal cracks and penetrating cracks; 　　Angle tolerance: four angles of 90°, the angle error on the long side is within 1°, and the angle error on the wide side is within 0.5°; 　　Dimensional error: length and width error: +1mm / - 1mm, 　　Thickness: 5-7mm: 　　Large panels 650x533, 650x350, 650x355, 600x300, 500x250, 500x375, 450x300, 450x250 shall not have slate below 5mm thickness; small panels 400x250, 400x200, 300x200 shall not have a thickness of less than 4.5mm (5-4.5) And cannot exceed 5%; 　　Complete corners: 4 corners are required. If there is a corner, the corners should not be larger than the long 20mm x 10mm wide surface. The number of notched tiles should not exceed 5%. (When punching, keep the corners at the end. Small head of slate). If there are two corners and the corners are at one end of the board, try to keep the two corners in the small head and leave the hole in the hole. If the missing corners are at the two ends of the board and the missing angle is greater than 20x10mm, it is a waste product and needs to be picked out. 　　Hole position: the large surface is the back surface and the small surface is the front surface. Two holes are drilled from the back side of the slate to the front side. The hole diameter is 4 mm, the distance between the center of the hole and the left and right sides is 30 mm, and the distance from the head is 245 mm. The positive and negative deviation does not exceed 1mm; 　　If customers have special requirements, they should conduct random inspection according to special requirements. 　　Testing method: 　　The length and width of the tape measure can be as large as the thickness, and the average thickness of the caliper is detected. 　　2) Angle error test method: When there is no protractor, the method of quickly checking and checking the angle of the tile is to find a flat plate, and the two adjacent tiles are back-to-back sideways and then turned together, and then one of the tiles is turned over. If the adjustment is coincident, even if the angle is 90°, if the reverse corners are not coincident, the cutter operator should be notified to check the angle of the saw blade and whether the gravel surface on the cutting machine needs to be cleaned, and notify the inspection. The machine operator checks the angle of the angle iron of the edger and the angle of the cutter head and whether the edge of the edger is worn to ensure that the angle of the tile is 90° or 89°, or to minimize the error. 　　Thickness sampling: Take 5-7mm thickness as an example: the average thickness should not be less than 5mm thickness. If some boards are thick and thin at one end, the thickness of t