Structural design and manufacture of the hottest p

Structural design and manufacture of packaging containers

Chapter 6 structural design and manufacture of metal barrels

section 1 Structure of steel barrels

metal barrels generally refer to containers with large capacity (greater than 20L) made of metal plates of more than 0.5mm. According to the different barrel materials, it can be divided into steel barrel, aluminum barrel, stainless steel barrel, etc

I. full opening steel barrel

the opening diameter of the full opening steel barrel is equal to the inner diameter of the barrel body

II. Closed steel barrel

the top and bottom of the barrel are combined with the barrel body through crimping and sealing, and they are not removable

1. There are two ring bars

2. There are 3 ~ 7 ripples at both ends

3. There are two ring bars, and there are 3 ~ 7 corrugations from the ring bar to the top and bottom of the barrel respectively

4. There are 3 ring bars

III. steel bucket

1. Structural type of steel bucket

① full opening tight ear cover bucket

② full opening seal ring cover bucket

③ closed necked bucket

④ closed bucket

2. Structural size of T-shaped bucket

3. Structural size of S-shaped bucket

IV. triple crimping structure of steel bucket

1. Triple crimping. Also known as seven layer curling, it is the main form of curling that the closed steel barrel body is expected to be connected with the bottom (top) of the barrel by more than 1/3 of the total sales by 2017

2. The characteristics of triple crimping. Let's take a detailed look at the following points

① good tightness

② strong impact strength

③ high process requirements

3. Triple crimping structure type

4. Design and calculation of triple crimping structure

5. Steel barrel closer

1. Closed hoop closer

① screw type closed hoop. It is a device to connect the two ends of the forming ring belt with screws to realize the fixation of the barrel cover

② lever type closure hoop. It is a device that connects the two ends of the forming ring belt through a lever, and moves the handle to realize the fixation of the barrel end

2. Spiral occluder. Screw sealers are divided into two types: plug type and screw cap type

① plug type sealer

② the exposed surface between the press type sealer and the outside is larger than that of other materials

3. Top pressure sealer. It is divided into bolt type and gland type

① bolt top pressing closer

② gland type closer

section II manufacturing process of steel barrel

I. main materials of steel barrel

1, characteristics of steel barrel materials

① good plasticity and weldability

② sufficient strength and appropriate hardness

③ good corrosion resistance

2, commonly used barrel materials

3, selection of steel plate thickness

II. Steel barrel body manufacturing process

1 Manufacturing process of circular closed steel barrel body

① blanking ② edging ③ rounding ④ welding ⑤ flanging ⑥ rolling corrugation ⑦ expansion ring reinforcement

4, processing process of circular open steel barrel body

① barrel mouth winding line ② barrel mouth necking

3, manufacturing process of barrel body

4, manufacturing process of special-shaped barrel body

III, manufacturing process of barrel top and barrel bottom

1, barrel bottom manufacturing worker

① plate cutting ② blanking Stretching ③ coating seam sealant

2, barrel top manufacturing process

① punching flanging ② locking ③ printing mark

3, barrel cover manufacturing process

IV. sealing combination process

1, precautions for double flanging process

2, triple flanging processing process

① forming process of triple flanging

② main factors affecting triple flanging quality

v. internal and external spraying process

1 Effect of steel barrel surface coating

2. Coating process

① air spraying method ② high pressure airless spraying method ③ electrostatic spraying method

3. Internal spraying process

① surface external treatment ② internal spraying

4. Spraying process

VI. automatic production of steel barrel

1 The latest achievements of barrel making automation

① automatic forming of barrel bottom and barrel top

② automatic trimming of barrel body flanging lap part

③ longitudinal seam welding of barrel body

④ complete inspection center

⑤ horizontal coating equipment

⑥ automatic printing plate making system

⑦ automatic leak detection system of steel barrel

⑧ warehouse stack system

6 Future development trend of automatic barrel making

① automatic production equipment of full opening steel barrel

② automatic printing device

③ automatic production line of barrel mouth parts

④ best welding control

⑤ automatic inspection equipment of steel barrel

section III quality inspection of steel barrel

I. Basic requirements

① the capacity and structural size of steel barrel shall comply with the provisions of national standards

② barrel body, barrel top The bottom of the barrel is made of a whole sheet of steel, and splicing is not allowed

③ the barrel body weld should be electro cathode weld

④ the barrel top should be set according to the opening form

8, performance requirements

① the air tightness test of the steel barrel

② the hydraulic test of the steel barrel

③ the drop test of the steel barrel

④ the stacking test of the steel barrel

10 Quality requirements

① quality regulations for the assembly of closures

② quality regulations for the protective layer on the inner and outer surfaces of steel drums

③ appearance quality requirements

5. The use and maintenance of steel pokes

① during transportation and loading and unloading, it should be measured to avoid collision, falling and rolling

② steel drums should not be stacked in the open air. When stacking, the bottom layer should be placed with cushion, and the outside should be covered with felt cloth to prevent sunlight Compared with blister

, the laminated composite fan blade adopting prepreg/molding process ③ the steel barrel packed with inflammable, explosive or some toxic substances is broken and leaked, and repair welding is not allowed to avoid dangerous accidents

④ the recycled steel barrel should be repaired and repaired to avoid corrosion

II. Quality inspection of steel barrel

1, performance and quality requirements

2 Test method

① structural size and appearance quality

② air tightness test

③ hydraulic test

④ drop test

⑤ stacking test

⑥ strength test of lifting beam and lifting ring

⑦ determination of paint film adhesion

3. Transportation, storage and precautions