10 steps you should know aluminum extrusion process crafts

Extruding

1. Operating Procedures:

1. Heating the ladle to 380 °C-420 °C in the form of 100 °C/1 hour.

2. According to the work plan, select the suitable amount of aluminum bar to be heated to 480 °C-520 °C in the rod furnace and carry out the special industrial profiles according to the specified process temperature.

3. Select the mold according to the work plan, heat it up to 460 °C ---500 °C, and hold the temperature for 2---4 hours.

4. Start the cooling motor of the extruder-hydraulic motor.

5. According to the Order of the plan, select the special pad for the mold and install it in the mold base, and lock the mold base in the extruding position.

6. Lock the container and raise the heated aluminum bar to the level of the tank by using the feed rack.

7. Master cylinder forward extrusion

8. When extruding, the starting speed should be slow, and the medium speed extruding speed should be adjusted according to the surface quality of the profile.

9. Enter details of mold number, aluminum bar number, main cylinder pressure, and discharge rate into the original record.

II. Process requirements

1. The heating temperature of the aluminum rod is: A flat mode: 500 °C ——520 °C B. Split mold: 480 °C ——500 °C C. Special industrial wood according to the special process requirements.

2. Mold heating process:

A. Flat mode: 460 °C -- 480 °C B. Split mold: 460 °C ——500 °C

3. Container Temperature: 380 °C -- 420 °C container temperature: 280 °C -- 360 °C

4. The extruded material must have a smooth surface, no handle in longitudinal indentation, fine and even extrusion lines, no bright band, black line, the plane gap between yin and yang, angle deviation, cutting slope according to the national standard high grade.

5. Extrusion pressure: ≤200 kgm2

6. The pressure of material block is 120 kg/cm ~ 2(150 kg/cm ~ 2) .

7. Hydraulic oil temperature ≤45 °C

8. The flow rate of profiles is generally controlled at 5 m/min ——30 m/min

9. Mold time in the furnace: ≤8 hours

10. Each extrusion of 80 sticks-100 sticks, must be used for cleaning a special cylinder liner.

3. Points to note

1. Extrusion, such as plug die, boring car, the time shall not exceed 5 seconds.

2, install mold, pay attention to safety, to prevent the screw off hurt foot.

3. When discharging, do not look straight ahead at the discharge port.

4, installed on the machine, must check the center position, extrusion bar is in the center, before starting no-load test machine run once, confirm that there is no error officially started.

5. Whether the temperature of the measuring stick, mold, and ingot can meet the requirement.

6.3 Foshan 5 rods checking the quality at one time.

Check the oil temperature frequently.

8. Does each aluminum bar have a furnace number and alloy number.

Interrupts

1. Operating procedures

1. When the material is discharged from the main machine, clamp the material head with pliers, guide the profile to the sliding platform and start the cooling fan, and open the water cooling system for the profile requiring water cooling.

2, with the interrupted, saw about 50 cm of the material head, write down the number of the mold, centralized collection, for reference to the repairman.

3, the discharge is normal, with the cutting saw about 50 cm of the profile, to the quality inspector inspection quality.

4, with the hand according to the discharge length, 13 meters, 19 meters, or 25 meters in order to break profile, straightening. If the total length is less than 26 meters. Is interrupted on the material joint.

5, the profile was interrupted, immediately with asbestos gloves gently supporting a push to the cold bed.

6. Check the quality. Especially for the first and second rods, we will check the surface quality of every other 3-iron-5 rod.

2. Process Requirements:

1. The air cooling speed of the discharge outlet shall not be lower than 110 °C/min

2, when sawing, pay attention to light pressure and saw and material synchronous progress, preventing profile bending.

3, push material, gently take to put, avoid artificial abrasions, and material table scratch.

Sawing, be sure to grasp the profile with your hands, to prevent the profile swing and scratching.

3. Points to note:

1. Do not extend the head and the operator is opposite the discharge port to prevent danger.

When starting the interrupt saw, the operator can not face the interrupt saw. Sawing Blade 30 cm range, not close to the body, to ensure safety.

Pay attention to the discharging road to prevent the bed from holding the profile.

Take care of your safety and don't burn yourself.

Pay attention to twisting when the section material is out of stock.

Stretching

1. Operating Procedures:

Check whether the oil pressure system is leaking and whether the air pressure is normal.

2, check the conveyor belt, cooling bed, and storage table are damaged and abraded section.

3. To confirm the length of the profile before drawing, and then predetermine the drawing rate, determine the drawing length, that is, the main Chuck moving position, usually 6063T5 draw rate is 0.5%-1%, 6061t 6 draw rate is 0.8%-1.5%.

4, according to the shape of the confirmation clamping method, a large section hollow profile, can be inserted into the drawing pad, but as far as possible to ensure adequate clamping area.

5. When the profile is cooled below 50 °C, it can be drawn.

6. When there are bending and twisting at the same time, it is necessary to correct the twisting and then pull and bending.

7. Test the first and second wires to make sure that the predetermined drawing rate and clamping method are suitable. Visual bending, twisting, and an inspection of the profile plane gap, mouth, and mouth, if not appropriate, to adjust the tensile rate.

When the normal drawing rate can not eliminate the bending, twisting, or can not make the geometry size qualified, the operator should be informed to stop the extrusion.

9, the profile on the cooling table can not rub each other, collision, overlapping stack, prevent scratch.

Process Requirements:

1. Profile cooling temperature: ≤50 °C

2, two rows of material should have a certain distance between each other to prevent scratches.

3. When drawing, the two ends should be clamped in the same direction. After the tail Chuck is clamped, the main chuck can be stretched.

4. Do not return to the main Chuck until the jaw is opened after the main Chuck is relieved of pressure.

3. Important notes:

1. When clamping the profile with the jaws, do not hold the hand on the part being clamped.

2. Stop the pump when the oil level is below the lower limit, the filter is blocked or the oil temperature is too high.

3, appear abnormal voice, to timely judge the cause and report to the squad leader.

4, profile surface oil pollution is strictly prohibited.

Sawing

1. Operating Procedures:

1. Open the saw machine, check whether the advance and retreat are normal, whether the saw blade needs repair, or replacement.

2. Move the straightened section to a plastic roller.

3. Fix length baffles where they are needed and make them strong.

4, the profile of the head cut off about 40 cm, and then against the fixed-length baffle, press the profile with your hand, foot forward switches, the profile cut.

Step back the saw blade and check the quality of each section.

6. Install the qualified profiles in the special frame.

7, the material mouth repair, fill out the tracking card, to the quality inspection signature after the statistical weighed delivery.

Process Requirements:

1. Sawing head material should not be less than 30 cm, and tail material should not be less than 40 cm to ensure quality.

2, sawing when the material can not be more than 6.

Saws should be neat, with no serious deformation, and Burr.

4, sawing margin customers do not have special requirements of the general stay of 20 mm, not vice tolerance.

5, move the profile gently to prevent scratching, scratching profile.

6, frame each layer to put more than 5 pads, and pay attention to different materials of the device to prevent deformation.

7. Trim the opening evenly and smoothly.

3. Important notes:

1, saw blade forward, people do not stand in front of the saw blade to prevent injury.

2, control the amount of fuel injection, and dry the profile above the oil.

The saw blade stretches and contracts in 10 to 15 seconds.

4. The saw edge such as curling or deformation should be corrected clearance or replacement.

Time Limitation

1. Operating Procedures:

1, before the furnace to check whether the temperature gauge is normal, material mouth, profile quality is

Whether qualified, profile name, quantity, frame number, and tracking card are consistent, can enter the furnace.

2. Install the furnace, turn on all the aging switches (such as gas unit, circuit, etc.), and then check each part of the equipment is normal.

3, fill in the furnace time, insulation time, and furnace time.

4, aging end, profile out, forced cooling.

5, the tracking card according to the timeliness of registration, check the hardness of the card in the profile box.

Process Requirements:

1. Temperature: 200 ± 5 °C

2、 time 2.5 hours, the temperature difference in the furnace can not exceed 10 °C. The profiles with special requirements shall be carried out according to the specified process requirements.

3. The hardness was measured when the material was cooled below 50 °C, the Wechsler hardness ≥8HW. Special hardness requirements in accordance with the special requirements.

3. Important notes:

1. No one is allowed to stand under the crane

2, the lifting frame shall not touch, damage profiles, and profiles shall not be trampled artificially.

3, out of the profile should not contact corrosive gas, dust, etc., Ask the furnace to cover a good color strip cloth.

4, material frames do not stack high shelves, generally not more than 3.

1, the attention of the monitor

The quality of the production plan directly affects the normal situation of production. In addition to assembling the molds and aluminum rods according to the production order, the key is to let all the staff understand the squad leader's plan, what materials to produce first, and then what to produce, and then we'll make something, and we'll make sure that we know what it is. The special pad must be prepared before the production of the plane die and the split die to be used. We can not wait for the upper sleeve die to be unloaded and then pull the next upper sleeve die out of the mold furnace, but we can not find the special pad, which causes the temperature of the mold to drop, the die can not be pressed or damaged, which affects the planned completion time and increases the production cost. Mould machine to see whether the same number with the production schedule, the wall thickness, length, color, and order number of the master is conducive to improving production, and control quality.

2. Things to note for a hosted phone

A qualified host must have a tacit agreement with the squad leader, can communicate with the squad leader, clear production plan, squad leader is not on-site can command production, will not cause downtime.

The operator must be familiar with the production plan to understand the start-up skills, and according to different surface treatment, section and wall thickness control extrusion speed, increase production, reduce waste production.

It is the sacred duty of the operator to operate strictly in accordance with the process and equipment operating rules. The operator must keep a close watch on the manipulator and the main cylinder when entering. The operator can not leave the suspension control switch on the console, to prevent the extrusion bar from breaking when there is no upper extrusion cake or manipulator failure.

3. Interrupt worker's procedure

Interrupt the shift in the first to check the blade of the fixed, rotating devices, safety devices and buttons are normal.

Pay close attention to the smooth running of the profile. When the required length of the profile is reached, start sawing.

Press the handle switch or footpad switch to press the saw blade to the section material. Keep moving in the same direction as the cutting speed. When the section material is cut off, the saw blade should be removed quickly.

Then the section will be cut into the material frame cooling, and every 3-5 pieces of material must be sawed sample surface quality inspection, at the same time appropriate to the saw blade oil.

Code of practice for Straightener

The straightener checks the mechanical fasteners and Hydraulic drive system, operating handles, and buttons during the shift change. Start the hydraulic pump, the motor is normal.

According to the length of the profile, adjust the distance of the back Chuck, Fix the back Chuck, test run with an empty load, "open-close" operation jaw, "stretch-return" large car several times, check whether it is normal or not, when the temperature of the profile is below 50 °C, it can be straightened. The feeding jaw is loosened and clamped, the cart is returned to the limit position, and the back Chuck is straightened when clamping simultaneously.

In the process of drawing, stretch the profile by hand to make it straight, or by rotating the chuck to make the profile straight, according to the drawing handle, the drawing rate should not be more than 1.5%, and pay attention to the shape and size of the profile, avoid overstretching. After stretching, the cart will return, loosen the front and back Chuck, and send the profile to the storage table.

The profile should be straightened in time to prevent the billet from piling up on the cooling bed, causing scratches, scratches and scratches. The profile should be decorated with the face facing up, and the decorative face should be avoided, the conveyor belt of the billet keeps synchronous operation with the overhead belt after the straightening is carried.

Code of practice for sawing and mounting frame

The first check the blade is fixed, transmission, safety devices, and buttons are normal, and then according to the "extrusion production sheet" on the profile length, color, and direction of loading cabinets, can not be mixed. Feed the material to the sawing table until it touches the block ruler, and put the profile straight. Spray the blade with an appropriate amount of cooking oil and then start cutting. Sawing to control the number of sawing once to prevent scratching, and for finished billet and smooth fabric sawing, each between the use of clean cloth intervals.

Sawing the good profile to the specified material frame, the quality of the material can not into the frame, in the process of loading the heavy profile on the bottom, light profile on the top. At the same time to do light to take, to prevent pressure injury, pressure concave, Crush. Every layer of profiles must be cushioned between the bar, the length of the profile is not consistent with the principle of mixed, need to be mixed, should be adopted under the short frame loading method, after the frame is installed, cover it with colored strip cloth and transfer it to the transfer bin in time.