{"id":12412,"date":"2021-09-23T02:37:32","date_gmt":"2021-09-23T02:37:32","guid":{"rendered":"https:\/\/duct.harsle.com\/?p=12412"},"modified":"2024-02-27T08:53:34","modified_gmt":"2024-02-27T08:53:34","slug":"fabrication-and-construction-of-sheet-metal-duct","status":"publish","type":"post","link":"https:\/\/duct.harsle.com\/vi\/fabrication-and-construction-of-sheet-metal-duct\/","title":{"rendered":"Ch\u1ebf t\u1ea1o v\u00e0 thi c\u00f4ng \u1ed1ng gi\u00f3 t\u1ea5m kim lo\u1ea1i"},"content":{"rendered":"

Nh\u01b0 ch\u00fang ta \u0111\u00e3 bi\u1ebft, v\u1eadt li\u1ec7u c\u1ee7a \u1ed1ng gi\u00f3 kim lo\u1ea1i t\u1ea5m l\u00e0 kh\u00e1c nhau, v\u00e0 ph\u01b0\u01a1ng ph\u00e1p gia c\u00f4ng c\u0169ng kh\u00e1c nhau. Tuy nhi\u00ean, h\u1ea7u h\u1ebft c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 l\u1eafp \u0111\u1eb7t \u0111\u1ec1u t\u01b0\u01a1ng t\u1ef1 nhau. Trong th\u1ef1c t\u1ebf, ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 \u1ed1ng th\u00f4ng gi\u00f3 b\u1eb1ng t\u00f4n. Do ph\u01b0\u01a1ng ph\u00e1p ch\u1ebf bi\u1ebfn c\u01a1 gi\u1edbi h\u00f3a c\u1ee7a n\u00f3, n\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh s\u1ef1 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u ph\u00f9 h\u1ee3p h\u01a1n cho h\u1ea7u h\u1ebft c\u00e1c d\u1ecbp.<\/p>\n\n\n\n

Ti\u1ebfp theo, ch\u00fang t\u00f4i xin gi\u1edbi thi\u1ec7u chi ti\u1ebft quy tr\u00ecnh s\u1ea3n xu\u1ea5t \u1ed1ng gi\u00f3 b\u1eb1ng s\u1eaft t\u1ea5m ho\u00e0n ch\u1ec9nh.<\/p>\n\n\n\n

Blanking And Beading Sheet Metal Duct<\/h2>\n\n\n\n

1. Trong ph\u00e2n x\u01b0\u1edfng gia c\u00f4ng, \u0111\u1ed9 d\u00e0y c\u1ee7a th\u00e9p t\u1ea5m m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo danh m\u1ee5c v\u1eadt li\u1ec7u \u0111\u00e3 chu\u1ea9n b\u1ecb c\u1ee7a \u1ed1ng gi\u00f3, t\u1ea5m th\u00e9p m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o m\u00e1y san v\u00e0 \u00e9p t\u1eeb khung c\u1ea5p li\u1ec7u, v\u00e0 k\u1ebft th\u00fac th\u00e9p t\u1ea5m s\u1ebd \u0111\u01b0\u1ee3c c\u1eaft sau khi kh\u1edfi \u0111\u1ed9ng. Trong khi cho \u0103n, ki\u1ec3m tra xem t\u1ea5m th\u00e9p c\u00f3 b\u1ecb nghi\u00eang hay kh\u00f4ng, c\u1ed1 g\u1eafng c\u1eaft m\u1ed9t t\u1ea5m th\u00e9p v\u00e0 \u0111o xem \u0111\u01b0\u1eddng c\u1eaft c\u1ee7a t\u1ea5m th\u00e9p \u0111\u00e3 c\u1eaft c\u00f3 vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng bi\u00ean hay kh\u00f4ng v\u00e0 \u0111\u01b0\u1eddng ch\u00e9o c\u00f3 \u0111\u1ed3ng nh\u1ea5t hay kh\u00f4ng.<\/p>\n\n\n\n

2. Nh\u1eadp chi\u1ec1u d\u00e0i v\u00e0 s\u1ed1 l\u01b0\u1ee3ng kho\u1ea3ng tr\u1ed1ng trong danh m\u1ee5c v\u1eadt li\u1ec7u v\u00e0o m\u00e1y t\u00ednh, kh\u1edfi \u0111\u1ed9ng m\u00e1y, m\u00e1y t\u00ednh s\u1ebd t\u1ef1 \u0111\u1ed9ng c\u1eaft v\u00e0 \u00e9p c\u1ed1t th\u00e9p. V\u1eadt li\u1ec7u d\u00f9ng \u0111\u1ec3 c\u1eaft t\u1ea5m ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra l\u1ea1i \u0111\u1ec3 tr\u00e1nh sai s\u00f3t.<\/p>\n\n\n\n

3. C\u00e1c t\u1ea5m c\u00f3 h\u00ecnh d\u1ea1ng \u0111\u1eb7c bi\u1ec7t s\u1ebd \u0111\u01b0\u1ee3c c\u1eaft b\u1eb1ng HARSLE-4015 m\u00e1y c\u1eaft plasma<\/a>, and the sporadic materials shall be cut with on-site electric scissors. When using the fixed dynamic shear, hold the steel plate with both hands, the hand shall not be less than 5cm away from the knife-edge, and the force shall be uniform and appropriate. Sheet Metal Duct<\/p>\n\n\n\n

Chamfer v\u00e0 kh\u00f3a<\/h2>\n\n\n\n

For the sheet metal air ducts connected by bite, the bite width and allowance are determined according to the plate thickness. The bite width is shown in the table below\uff1a Sheet Metal Duct<\/p>\n\n\n\n

\n
\u0110\u1ed9 d\u00e0y t\u1ea5m \uff08mm\uff09<\/td>Chi\u1ec1u r\u1ed9ng kh\u00f3a g\u00f3c (mm)<\/td>Chi\u1ec1u r\u1ed9ng kh\u00f3a ph\u1eb3ng (mm)<\/td><\/tr>
0.75<\/td>8 \uff5e 10<\/td>7 \uff5e 8<\/td><\/tr>
1,0 \uff5e 1,2<\/td>10 \uff5e 12<\/td>9 \uff5e 10<\/td><\/tr>
1.5<\/td>12 \uff5e 14<\/td>10 \uff5e 11<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n
\"Sheet
<\/figcaption><\/figure>\n\n\n\n

Gia c\u00f4ng m\u1eb7t b\u00edch<\/h2>\n\n\n\n

Connection method of angle steel flange: the flange is assembled and welded by four-angle steel. During marking and blanking, it shall be noted that the inner diameter of the welded flange shall not be less than the outer diameter of the air duct, and shall be cut off by the grinding wheel cutter according to the line; After blanking and straightening, put it on the drilling machine to drill rivet holes and bolt holes. <\/p>\n\n\n\n

The hole spacing of the ventilation and air conditioning system shall be greater than 150m, and the hole spacing of the smoke exhaust system shall not be greater than 100mm. The punched angle steel shall be evenly divided and placed on the welding platform for welding. During welding, it shall be clamped and flattened according to the molds of various specifications. After welding, bolt holes shall be drilled on the bench drill; The bolt hole spacing is the same as the rivet hole spacing and evenly distributed. Sheet Metal Duct<\/p>\n\n\n\n

G\u1ea5p \u1ed1ng d\u1eabn kh\u00ed<\/h2>\n\n\n\n

The sheet metal after undercut shall be placed on the folding machine according to the drawn folding line and placed on the centerline of the lower die. During operation, make the centerline of the upper folded square piece of the machine coincide with the center of the lower die and fold it into the required angle. <\/p>\n\n\n\n

When folding, they shall cooperate with each other and keep a certain distance from the folding machine to avoid being hurt by the overturned steel plate or counterweight.<\/p>\n\n\n\n

\u0110\u01b0\u1eddng n\u1ed1i \u1ed1ng d\u1eabn kh\u00ed<\/h2>\n\n\n\n

\u1ed0ng gi\u00f3 b\u1eb1ng kim lo\u1ea1i t\u1ea5m \u0111\u01b0\u1ee3c ho\u00e0n thi\u1ec7n b\u1eb1ng c\u00e1ch c\u1eafn ph\u1ea3i \u0111\u01b0\u1ee3c kh\u00e2u b\u1eb1ng m\u00e1y h\u00e0n \u0111i\u1ec7n c\u1ea7m tay. Ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 ngo\u00e0i c\u1ee7a \u1ed1ng gi\u00f3 \u0111\u01b0\u1ee3c may ph\u1ea3i th\u1eb3ng, cung tr\u00f2n \u0111\u1ec1u, hai \u0111\u1ea7u ph\u1ea3i song song, kh\u00f4ng c\u00f3 g\u00f3c cong v\u00eanh v\u00e0 \u0111\u1ed9 l\u1ed3i l\u00f5m c\u1ee7a b\u1ec1 m\u1eb7t kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 5mm.<\/p>\n\n\n\n

C\u00e0i \u0111\u1eb7t m\u1eb7t b\u00edch g\u00f3c<\/h2>\n\n\n\n

Khi t\u1ea5m kim lo\u1ea1i \u1ed1ng d\u1eabn kh\u00ed<\/a> \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi m\u1eb7t b\u00edch, \u0111\u1ed9 l\u1ec7ch cho ph\u00e9p \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong b\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n\n\n\n

Chi\u1ec1u d\u00e0i<\/td>\u0110\u1ed9 l\u1ec7ch<\/td>\u0110\u1ed9 l\u1ec7ch cho ph\u00e9p b\u00ean trong m\u1eb7t b\u00edch<\/td>\u0110\u1ed9 l\u1ec7ch ph\u1eb3ng cho ph\u00e9p<\/td>\u0110\u1ed9 l\u1ec7ch cho ph\u00e9p theo \u0111\u01b0\u1eddng ch\u00e9o<\/td><\/tr>
\u2264300mm<\/td>-1 \uff5e 0mm<\/td>+ 1 \uff5e + 3mm<\/td>2mm<\/td>\u22643mm<\/td><\/tr>
\u2265300mm<\/td>-2 \uff5e 0mm<\/td>+ 1 \uff5e + 3mm<\/td>2mm<\/td>\u22643mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\"Ch\u1ebf
<\/figcaption><\/figure>\n\n\n\n

Before riveting the sheet metal air duct and the flange, the technical quality shall be reviewed first. After it is qualified, the flange shall be sleeved on the air duct. The straight line of the air duct shall be perpendicular to the flange plane, and then the hydraulic rivet pliers or manual eye clamp shall be used for 5 \u00d7 10 rivets the air duct and turn it around; Sheet Metal Duct<\/p>\n\n\n\n

The flange\u00a0shall be flat, not less than 6mm, the four corners shall be leveled, and there shall be no gap to avoid air leakage. The minimum thickness of the plate and the minimum specification of the hanger are as follows:Sheet Metal Duct<\/p>\n\n\n\n

Chi\u1ec1u d\u00e0i \u1ed1ng d\u1eabn kh\u00ed B<\/td>\u1ed0ng tr\u00f2n<\/td>\u1ed0ng d\u1eabn h\u00ecnh ch\u1eef nh\u1eadt<\/td>\u1ed0ng x\u1ea3 kh\u00f3i<\/td>\u0110\u01b0\u1eddng k\u00ednh b\u00f9ng n\u1ed5<\/td>Th\u00e9p g\u00f3c<\/td>Th\u00e9p ch\u1eef U<\/td><\/tr>
B\u2264320<\/td>0.5<\/td>0.5<\/td>0.75<\/td>8<\/td>25 \u00d7 3<\/td>40 \u00d7 20 \u00d7 1,5<\/td><\/tr>
320 \uff1c B\u2264630<\/td>0.5<\/td>0.6<\/td>0.75<\/td>8<\/td>25 \u00d7 3<\/td>40 \u00d7 40 \u00d7 2,0<\/td><\/tr>
630 \uff1c B\u22641000<\/td>0.75<\/td>0.75<\/td>1.0<\/td>10<\/td>30 \u00d7 4<\/td>40 \u00d7 40 \u00d7 2,0<\/td><\/tr>
1000 \uff1c B\u22642000<\/td>1.2<\/td>1.0<\/td>1.2<\/td>10<\/td>40 \u00d7 4<\/td>60 \u00d7 40 \u00d7 2,0<\/td><\/tr>
2000 \uff1c B\u22644000<\/td>1.2<\/td>1.2<\/td>1.2<\/td>10<\/td>50 \u00d7 5<\/td>60 \u00d7 40 \u00d7 2,0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

C\u00e1c b\u01b0\u1edbc x\u00e2y d\u1ef1ng<\/h2>\n\n\n\n
\"Ch\u1ebf
<\/figcaption><\/figure>\n\n\n\n

M\u1eb7t b\u00edch TDF<\/h2>\n\n\n\n

The common plate flange has the characteristics of low cost, good sealing performance, and convenient and simple installation. It is especially suitable for the production of ventilation pipes with a small cross-sectional area. Because the flange is bent by the galvanized steel plate itself, it has the advantages of being lightweight, good sealing, and convenient manufacture and installation. Sheet Metal Duct<\/p>\n\n\n\n

The basic requirements are the same as the angle steel flange air duct. The basic requirements for the manufacture of a common plate flange air duct are the same as that of an angle steel flange air duct. After the plate impact angle and bite, it enters the common plate flange machine to press the flange. Sheet Metal Duct<\/p>\n\n\n\n

The semi-finished products after pressing the flange shall be transported to the construction site, the flange corners shall be folded, stitched, and installed, the flange surface shall be leveled, the diagonal error of the air duct shall be inspected, and finally, the four corners shall be sealed with sealant. Sheet Metal Duct<\/p>\n\n\n\n

Ch\u1ebf t\u1ea1o \u1ed1ng d\u1eabn kh\u00ed b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9<\/h2>\n\n\n\n

When making a stainless steel sheet metal air duct, the plate shall be spliced by argon arc welding. During welding, the welding materials shall be matched with the base metal, and the surface shall be prevented from being polluted by welding spatter. After welding, the welding slag and spatter shall be removed. <\/p>\n\n\n\n

After the fabrication of the air duct, all welds shall be pickled and passivated to prevent rust. The minimum thickness of stainless steel air duct plate and flange specification are as follows: Sheet Metal Duct<\/p>\n\n\n\n

Chi\u1ec1u d\u00e0i \u1ed1ng d\u1eabn kh\u00ed B<\/td>\u0110\u1ed9 d\u00e0y t\u1ea5m kh\u00f4ng g\u1ec9 \uff08mm\uff09<\/td>Lo\u1ea1i th\u00e9p g\u00f3c<\/td>\u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt bu l\u00f4ng<\/td><\/tr>
B\u2264320<\/td>1.0<\/td>25 \u00d7 3<\/td>M6<\/td><\/tr>
320 \uff1c B\u2264630<\/td>1.0<\/td>25 \u00d7 3<\/td>M6<\/td><\/tr>
630 \uff1c B\u22641000<\/td>1.0<\/td>30 \u00d7 4<\/td>M8<\/td><\/tr>
1000 \uff1c B\u22642000<\/td>1.2<\/td>40 \u00d7 4<\/td>M8<\/td><\/tr>
2000 \uff1c B\u22644000<\/td>1.2<\/td>50 \u00d7 5<\/td>M10<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

T\u1ea5t c\u1ea3 c\u00e1c k\u1ebft n\u1ed1i gi\u1eefa \u1ed1ng gi\u00f3 b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 th\u00f4ng qua k\u1ebft n\u1ed1i m\u1eb7t b\u00edch. M\u1eb7t b\u00edch \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng th\u00e9p ph\u1eb3ng kh\u00f4ng g\u1ec9, v\u00e0 k\u1ebft n\u1ed1i gi\u1eefa m\u1eb7t b\u00edch v\u00e0 \u1ed1ng d\u1eabn kh\u00ed th\u00f4ng qua h\u00e0n h\u1ed3 quang argon.<\/p>\n\n\n\n

\"Ch\u1ebf
<\/figcaption><\/figure>\n\n\n\n

V\u1eadn h\u00e0nh \u0111\u01b0\u1eddng \u1ed1ng \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed s\u1ea1ch<\/h2>\n\n\n\n

The manufacturing sequence of ventilation pipes, fittings, and components is plate handling, cleaning oil stain, making bite, folding, removing oil stain on the surface, combined riveting forming, scrubbing the inner surface, inspecting the closed nozzle, and stacking of finished products. Control points of ventilation duct fabrication and processing technology: Sheet Metal Duct<\/p>\n\n\n\n

1. T\u1ea5m ph\u1ea3i \u0111\u01b0\u1ee3c c\u1ea5p gi\u1ea5y ch\u1ee9ng nh\u1eadn v\u1eadt li\u1ec7u, ki\u1ec3m tra b\u1ec1 ngo\u00e0i ph\u1ea3i ph\u1eb3ng, nh\u1eb5n, kh\u00f4ng b\u1ecb x\u01b0\u1edbc v\u00e0 bong tr\u00f3c l\u1edbp k\u1ebdm, \u0111\u1ea1t y\u00eau c\u1ea7u thi\u1ebft k\u1ebf, n\u1ebfu kh\u00f4ng s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n\n\n\n

2. Before processing, remove the oil stain on the plate and do one touch, two wipes, and three checks to ensure that the oil stain is completely removed. Sheet Metal Duct<\/p>\n\n\n\n

3. Trong qu\u00e1 tr\u00ecnh gia c\u00f4ng, \u0111\u1ec3 t\u00f4n s\u1eaft kh\u00f4ng b\u1ecb x\u01b0\u1edbc, m\u00f2n l\u00e0m h\u1ecfng l\u1edbp k\u1ebdm, ho\u1eb7c b\u1ecb b\u00e1m b\u1ee5i, ng\u01b0\u1eddi ta l\u00e1t t\u1ea5m cao su d\u00e0y 3mm tr\u00ean n\u1ec1n xi m\u0103ng ph\u1eb3ng, ti\u1ebfn h\u00e0nh t\u1ea9y tr\u1eafng. tr\u00ean t\u1ea5m cao su.<\/p>\n\n\n\n

4. When cutting, undercutting, splicing, folding, and transporting sheet materials, the storage rack or four-wheel trolley shall be used to receive and transfer the materials, and shall not touch the ground and drag; Semi-finished products are stacked on the platform with a rubber plate. Sheet Metal Duct<\/p>\n\n\n\n

5. Key points of flange processing control: the profile must meet the high-quality standard and shall not be rusted, skinned, or pitted; The flatness of the flange welding joint shall not be greater than 0.5mm, the rivets must be galvanized, the rivet spacing shall not be greater than 100mm (screw hole spacing shall not be greater than 12mm), the hole spacing shall be accurate and interchangeable; Welding slag, welding spatter and floating rust shall be completely removed; Apply anti-rust primer with strong adhesion for two times, and there shall be no paint dripping in screw holes and corners. Sheet Metal Duct<\/p>\n\n\n\n

6. For the combination of semi-finished products of inner pipes, components, and accessories, the dirt at the site shall be removed first. After the combination riveting, the gaps and holes shall be blocked with glue or tin. The flange\u00a0width is consistent, greater than 7mm, and the screw hole is not covered; The flatness is less than 1mm. The finished products shall be stored horizontally by category, and attention shall be paid to protect the paint from wear; For the air duct to be reinforced, the stiffener is only allowed to be set on the outer wall. Sheet Metal Duct<\/p>\n\n\n\n

\"Ch\u1ebf
<\/figcaption><\/figure>\n\n\n\n

7. C\u00e1c linh ki\u1ec7n v\u00e0 ph\u1ee5 ki\u1ec7n c\u1ee7a \u1ed1ng gi\u00f3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t d\u01b0\u1edbi d\u1ea1ng kh\u1edbp c\u1eafn \u0111\u01a1n, kh\u1edbp c\u1eafn g\u00f3c, kh\u1edbp c\u1eafn, v.v.<\/p>\n\n\n\n

8. When making the sheet metal air duct, the material shall be cut according to the plate to minimize the joints. The specific provisions are as follows: there shall be no joints within 800mm of the bottom edge width of the rectangular air duct, there shall be only one joint within 800mm-1000mm, and there can be two joints within 2400mm. Transverse splicing is prohibited for all the above dimensions, and the ratio of the long side to the short side of the rectangular air duct shall not be greater than 4:1; Sheet Metal Duct<\/p>\n\n\n\n

The butt joint shall be of a single flat type. Pay attention to placing the flat surface of the butt joint on the inner wall of the pipe without reversal during the corner butt joint; The flexible short pipe shall be made of a soft rubber plate or high-quality artificial leather. The inner wall shall be smooth, the longitudinal joint shall be glued smoothly, and there shall be no holes or glue leakage gaps. Sheet Metal Duct<\/p>\n\n\n\n

9. Cleaning of air duct: the cleaning of the air duct is particularly important. Generally, the galvanized steel plate has not been decreased, and the surface of the steel plate is coated with a large amount of grease. If it is not cleaned, it will be contaminated with dust during transportation, installation, and subsequent operation. During long-term use, it may lead to dust accumulation and flying, resulting in a sudden increase in the dust concentration in the air in front of the filter, This has a very adverse impact on the use of high-efficiency filters. <\/p>\n\n\n\n

Cleaning is mainly dust removal and degreasing. Clean water or pure water plus neutral cleaning agent shall be used for dust removal, and trichloroethylene or industrial alcohol shall be used for degreasing. Sheet Metal Duct<\/p>\n\n\n\n

Tr\u00ecnh t\u1ef1 v\u1ec7 sinh: l\u00e0m s\u1ea1ch b\u1eb1ng n\u01b0\u1edbc s\u1ea1ch ho\u1eb7c n\u01b0\u1edbc tinh khi\u1ebft, r\u1eeda b\u1eb1ng ch\u1ea5t t\u1ea9y r\u1eeda trung t\u00ednh, d\u00f9ng n\u01b0\u1edbc kh\u1eed trichloroethylen ho\u1eb7c c\u1ed3n c\u00f4ng nghi\u1ec7p ho\u1eb7c n\u01b0\u1edbc tinh khi\u1ebft \u0111\u1ec3 gi\u1eb7t v\u1ea3i s\u1ea1ch, ch\u00e0 v\u1ea3i l\u1ee5a tr\u1eafng \u0111\u1ec3 ki\u1ec3m tra (n\u1ebfu kh\u00f4ng \u0111\u1ed5i m\u00e0u l\u00e0 \u0111\u1ee7 ti\u00eau chu\u1ea9n) .<\/p>\n\n\n\n

\u1ed0ng d\u1eabn kh\u00ed \u0111\u1ee7 ti\u00eau chu\u1ea9n ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn b\u1eb1ng m\u00e0ng nh\u1ef1a ngay l\u1eadp t\u1ee9c.<\/p>\n\n\n\n

10. Sau khi \u1ed1ng gi\u00f3 \u0111\u01b0\u1ee3c gia c\u00f4ng v\u00e0 s\u1ea3n xu\u1ea5t, n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c ki\u1ec3m tra c\u1ea9n th\u1eadn v\u00e0 to\u00e0n di\u1ec7n. Sau khi qua ki\u1ec3m tra b\u00e0n giao v\u00e0 nghi\u1ec7m thu s\u1ebd \u0111\u01b0\u1ee3c d\u00e1n m\u00e0ng nh\u1ef1a d\u1ebbo cao c\u1ea5p. Ph\u1ea7n ni\u00eam phong ph\u1ea3i \u0111\u01b0\u1ee3c li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd b\u1eb1ng b\u0103ng d\u00ednh, sau \u0111\u00f3 x\u1ebfp ch\u1ed3ng l\u00ean nhau theo t\u1eebng lo\u1ea1i.<\/p>\n\n\n\n

\"Ch\u1ebf
<\/figcaption><\/figure>\n\n\n\n

L\u1eafp \u0111\u1eb7t \u1ed1ng d\u1eabn kh\u00ed FRP<\/h2>\n\n\n\n

1. \u0110\u1ed1i v\u1edbi k\u1ebft n\u1ed1i m\u1eb7t b\u00edch c\u1ee7a \u1ed1ng gi\u00f3 FRP, kho\u1ea3ng c\u00e1ch bu l\u00f4ng m\u1eb7t b\u00edch kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 120mm, kho\u1ea3ng c\u00e1ch m\u1eb7t b\u00edch ph\u1ea3i \u0111\u1ed3ng \u0111\u1ec1u, m\u1eb7t b\u00edch ph\u1ea3i ph\u1eb3ng v\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a mi\u1ebfng \u0111\u1ec7m m\u1eb7t b\u00edch ph\u1ea3i l\u00e0 3 ~ 5mm.<\/p>\n\n\n\n

2. Khi chi\u1ec1u d\u00e0i c\u1ee7a \u1ed1ng gi\u00f3 FRP v\u01b0\u1ee3t qu\u00e1 20m, n\u00ean c\u00f3 th\u00eam \u00edt nh\u1ea5t m\u1ed9t gi\u00e1 \u0111\u1ee1 c\u1ed1 \u0111\u1ecbnh.<\/p>\n\n\n\n

3. C\u00e1c bu l\u00f4ng k\u1ebft n\u1ed1i c\u1ee7a \u1ed1ng gi\u00f3 FRP l\u00e0 bu l\u00f4ng m\u1ea1 k\u1ebdm, v\u00e0 c\u00e1c mi\u1ebfng \u0111\u1ec7m tr\u01a1n m\u1ea1 k\u1ebdm \u0111\u01b0\u1ee3c th\u00eam v\u00e0o c\u1ea3 hai m\u1eb7t c\u1ee7a bu l\u00f4ng m\u1eb7t b\u00edch.<\/p>\n\n\n\n

4. \u0110\u1ed9 ph\u1eb3ng c\u1ee7a m\u1eb7t b\u00edch \u1ed1ng gi\u00f3 FRP kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 3mm, \u0111\u1ed9 l\u1ec7ch k\u00edch th\u01b0\u1edbc c\u1ee7a \u1ed1ng gi\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 3mm v\u00e0 \u0111\u1ed9 l\u1ec7ch k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1eddng ch\u00e9o kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 5mm.<\/p>\n\n\n\n

5. K\u1ebft n\u1ed1i gi\u1eefa \u1ed1ng gi\u00f3 FRP v\u00e0 c\u1eeda gi\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c m\u1edf t\u1ea1i ch\u1ed7 m\u00e0 ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00fac s\u1eb5n trong qu\u00e1 tr\u00ecnh gia c\u00f4ng v\u00e0 ch\u1ebf t\u1ea1o.<\/p>\n\n\n\n

T\u1ea5m gia c\u1ed1 \u1ed1ng kim lo\u1ea1i<\/h2>\n\n\n\n

1. Khi k\u00edch th\u01b0\u1edbc c\u1ea1nh l\u1edbn c\u1ee7a \u1ed1ng gi\u00f3 b\u1eb1ng kim lo\u1ea1i t\u1ea5m l\u00e0 630 ~ 1000mm, c\u1ed1t th\u00e9p ph\u1ea3i \u0111\u01b0\u1ee3c \u00e9p tr\u1ef1c ti\u1ebfp tr\u00ean d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t, s\u1ef1 s\u1eafp x\u1ebfp ph\u1ea3i \u0111\u1ec1u \u0111\u1eb7n, kho\u1ea3ng c\u00e1ch ph\u1ea3i \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 b\u1ec1 m\u1eb7t t\u1ea5m kh\u00f4ng \u0111\u01b0\u1ee3c bi\u1ebfn d\u1ea1ng r\u00f5 r\u00e0ng .<\/p>\n\n\n\n

2. Khi k\u00edch th\u01b0\u1edbc c\u1ea1nh l\u1edbn c\u1ee7a \u1ed1ng gi\u00f3 tr\u00ean 1000mm, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u00e9p g\u00f3c, th\u00e9p d\u1eb9t, \u1ed1ng th\u00e9p, r\u00e3nh ch\u1eef z, thanh gia c\u01b0\u1eddng, v\u00edt lu\u1ed3n d\u00e2y \u0111i\u1ec7n, v.v ... \u0111\u1ec3 gia c\u1ed1 b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i c\u1ee7a \u1ed1ng.<\/p>\n\n\n\n

3. \u0110\u1ed1i v\u1edbi c\u1ed1t th\u00e9p g\u00f3c ho\u1eb7c thanh c\u1ed1t th\u00e9p, chi\u1ec1u cao c\u1ee7a n\u00f3 ph\u1ea3i nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng chi\u1ec1u cao c\u1ee7a m\u1eb7t b\u00edch \u1ed1ng gi\u00f3, b\u1ed1 tr\u00ed g\u1ecdn g\u00e0ng, kho\u1ea3ng c\u00e1ch ph\u1ea3i \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 \u0111\u1ed1i x\u1ee9ng v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 220mm, v\u00e0 \u0111inh t\u00e1n v\u1edbi \u1ed1ng d\u1eabn kh\u00ed ph\u1ea3i ch\u1eafc ch\u1eafn.<\/p>\n\n\n\n

4. \u0110\u01b0\u1eddng \u1ed1ng ph\u1ea3i \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 v\u00e0 gia c\u1ed1 b\u1eb1ng v\u00edt d\u00e2y. Mi\u1ebfng \u0111\u1ec7m \u0111\u1eb7c bi\u1ec7t c\u1ee7a n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean th\u00e0nh trong c\u1ee7a \u1ed1ng d\u1eabn kh\u00ed c\u00e1ch nhi\u1ec7t b\u00ean ngo\u00e0i. \u0110\u1ed1i v\u1edbi \u1ed1ng d\u1eabn kh\u00ed kh\u00f4ng c\u00e1ch nhi\u1ec7t ho\u1eb7c \u1ed1ng d\u1eabn kh\u00ed c\u00e1ch nhi\u1ec7t b\u00ean trong th\u00ec ph\u1ea3i \u0111\u1eb7t \u1edf th\u00e0nh ngo\u00e0i c\u1ee7a \u1ed1ng d\u1eabn kh\u00ed. V\u00edt xuy\u00ean d\u00e2y ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf t\u00e2m c\u1ee7a \u1ed1ng d\u1eabn kh\u00ed. Khi ti\u1ebft di\u1ec7n c\u1ee7a \u1ed1ng d\u1eabn kh\u00ed l\u1edbn, v\u00edt xuy\u00ean d\u00e2y ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ed5 sung \u1edf c\u1ea3 hai ph\u00eda g\u1ea7n v\u1edbi m\u1eb7t b\u00edch \u0111\u1ec3 h\u1ed7 tr\u1ee3 v\u00e0 gia c\u1ed1.<\/p>\n\n\n\n

5. Khi ti\u1ebft di\u1ec7n c\u1ee7a \u1ed1ng gi\u00f3 l\u1edbn h\u01a1n 1250 * 630, \u0111\u1ec3 gi\u1eef cho c\u00e1c b\u1ee9c t\u01b0\u1eddng li\u1ec1n k\u1ec1 vu\u00f4ng g\u00f3c v\u1edbi nhau, n\u00ean s\u1eed d\u1ee5ng gi\u00e1 \u0111\u1ee1 nghi\u00eang 90 \u1edf b\u1ed1n g\u00f3c c\u1ee7a \u1ed1ng gi\u00f3 \u0111\u1ec3 gia c\u1ed1.<\/p>\n\n\n\n

6. Khi chi\u1ec1u d\u00e0i c\u1ee7a \u1ed1ng gi\u00f3 trung \u00e1p v\u00e0 h\u1ec7 th\u1ed1ng cao \u00e1p l\u1edbn h\u01a1n 1250mm th\u00ec ph\u1ea3i d\u00f9ng khung gia c\u1ed1 \u0111\u1ec3 gia c\u1ed1.<\/p>\n\n\n\n

\"Ch\u1ebf
<\/figcaption><\/figure>\n\n\n\n

Nh\u1eefng d\u1ecbp kh\u00e1c nhau khi\u1ebfn b\u00ean d\u1ef1 \u00e1n s\u1ea3n xu\u1ea5t ph\u1ea3i l\u1ef1a ch\u1ecdn c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau v\u00e0 c\u00e1c lo\u1ea1i \u1ed1ng th\u00f4ng gi\u00f3 kh\u00e1c nhau. Tuy nhi\u00ean, do s\u1ef1 gi\u1ed1ng nhau c\u1ee7a \u1ed1ng th\u00f4ng gi\u00f3, ch\u00fang ta s\u1ebd th\u1ea5y r\u1eb1ng b\u1ea5t k\u1ec3 \u1ed1ng gi\u00f3 ph\u00e1t tri\u1ec3n nh\u01b0 th\u1ebf n\u00e0o, khung c\u01a1 b\u1ea3n v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 h\u1ed7 tr\u1ee3 c\u1ee7a n\u00f3 l\u00e0 c\u1ed1 \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y c\u0169ng x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 li\u00ean quan cao c\u1ee7a vi\u1ec7c s\u1ea3n xu\u1ea5t, ch\u1ebf bi\u1ebfn v\u00e0 l\u1eafp \u0111\u1eb7t \u1ed1ng gi\u00f3.<\/p>\n\n\n\n

Ch\u1ec9 b\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c b\u01b0\u1edbc s\u1ea3n xu\u1ea5t v\u00e0 l\u1eafp \u0111\u1eb7t m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd m\u1edbi c\u00f3 th\u1ec3 n\u00e2ng cao hi\u1ec7u qu\u1ea3 d\u1ef1 \u00e1n.<\/p>","protected":false},"excerpt":{"rendered":"

As we all know, the materials of the sheet metal air duct are different, and the processing methods are also<\/p>","protected":false},"author":1,"featured_media":12422,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[123,200],"tags":[181,297,300,182,201],"class_list":["post-12412","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-duct-machine","category-ventilation-duct","tag-air-duct-machine","tag-air-duct-production","tag-galvanized-sheet-ventilation-duct","tag-hvac-air-duct","tag-ventilation-duct"],"jetpack_featured_media_url":"https:\/\/duct.harsle.com\/wp-content\/uploads\/2021\/09\/duct-structure-diagram.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/duct.harsle.com\/vi\/wp-json\/wp\/v2\/posts\/12412","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/duct.harsle.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/duct.harsle.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/duct.harsle.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/duct.harsle.com\/vi\/wp-json\/wp\/v2\/comments?post=12412"}],"version-history":[{"count":0,"href":"https:\/\/duct.harsle.com\/vi\/wp-json\/wp\/v2\/posts\/12412\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/duct.harsle.com\/vi\/wp-json\/wp\/v2\/media\/12422"}],"wp:attachment":[{"href":"https:\/\/duct.harsle.com\/vi\/wp-json\/wp\/v2\/media?parent=12412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/duct.harsle.com\/vi\/wp-json\/wp\/v2\/categories?post=12412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/duct.harsle.com\/vi\/wp-json\/wp\/v2\/tags?post=12412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}