Home > Products > Cold Drawing Machine > Metal Tube Chain Cold Drawing Machinery With 30mm 10m/Min
Metal Tube Chain Cold Drawing Machinery With 30mm 10m/Min
- 0 Kilogram / Kilograms per Month
- T/T L/C D/P D/A
- 7 days
Product Details
Brand Name: | hengli | Place of Origin: | China | Model Number: | LW5 |
Product Description
Certification:ISO9001-2000
Metal Tube Chain Cold Drawing Machinery With 30mm 10m/Min
Quick Detail:
Type: cold drawnbench
Brand name: Hengli
Model number: LW5
Input material: common carbon steel, alloy, nonferrous metal
After-sales service provided: overseas service available
Place of Origin: Jiangsu, China (Mainland)
Used in: the field of Carbon pipes, Non-ferrous metal pipes, and so on.
Description:
Introduction of the tube drawing process
When a hollow tube is drawn through a die, generally a mandrel or plug is used to support the inside diameter of the tube, this process is called tube drawing. The function of the plug is to effect wall reduction and to control the size of the hole. However, the mandrel may be omitted if it is not necessary to make a reduction in the wall thickness, or if the dimensions and surface of the inside are not important. The process to draw a pipe without any mandrel is known as tube sinking.
In drawing tubes over a stationary mandrel, the maximum practical sectional area reduction does not exceed 40 percent per pass the increased friction from the mandrel. If a carefully matched mandrel floats in the die throat of the die, it is possible to achieve a reduction in area of 45 percent, and for the same reduction the drawing loads are lower than for drawing with a fixed plug. This style is called the drawing with floating plug. To be mentioned is that in this style, tool design and lubrication can be very critical. Problems with friction in tube drawing are minimized in drawing with a long mandrel. The mandrel consists of along hard rod or wire that extends over the entire length of the tube and is drawn through the die with the tube. In this design, the area reduction can be 50 percent. However, after drawing, the mandrel must be removed from the tube by rolling (reeling), which increases the tube diameter slightly and disturbs the dimensional tolerances. The drawing process discussed above can be illustrated in the Fig. 1.
Fig. 1: Tube drawing processes. (a) sinking; (b) fixed plug; (c) floating plug; (d) moving mandrel A cold-draw bench for tubes consists of a heavy steel frame or bench, in the middle of which is located a die head for holding the die. At one end of the bench is located an adjustable holder to anchor the mandrel rod. At its other end a shaft is mounted carrying a sprocket wheel over which passes a heavy, endless, square-linked chain. This chain lies in a trough on top of the bench, which extends from the sprocket wheel to the die head, where the chain passes around an idler and returns underneath the bench to the sprocket wheel. The sprocket wheel is driven by a variable speed motor through suitable reduction gearing.
Production Operation
The hot-rolled tubes after cooling are pointed on one end. This pointing consists of reducing the outside diameter, for a distance of about 150 mm (6 inches), sufficiently to permit the reduced portion to enter the hole in the draw die freely, so that the jaws of the plyer can grip this end of the tube. If more than one cold-draw pass is to be given the tube, the point is made slightly under the final die size, if possible.
In most cases, one cold-draw pass is sufficient to reach close dimensions, good surface, and required mechanical property of the products. Additional passes may be necessary to secure: (1) thinner walls, (2) better surface finishes, (3) smaller diameters, or (4) longer length.
For production with multiple passes, it is necessary to anneal them after each cold drawing operation. Before further cold-drawing, the annealed tubes must be pickled and lubricated. All tubes, except unannealed mechanical tubes, receive a final anneal or heat treatment after the last cold-draw pass. Many tubes receive a special normalizing treatment before the last pass in order to obtain the proper grain structure in the finished tube; this annealing is performed in either continuous tunnel or car-bottom batch furnaces fired with gas. The continuous furnaces are provided with heat-resisting driven rolls used to carry the tubes through the furnace at a predetermined rate depending on the tube section, annealing temperature, time at temperature, etc. The car-bottom batch furnaces are arranged in a battery and are served by a special charging crane.
Further, the cold-drawn, annealed tubes are subjected to the finishing operation such as straightening, cutting, inspecting and testing.
Applications:
Specifications:
NO. |
Name |
Technical Parameters |
Unit |
1 |
Contact Us
- China Rolling Mill Machine Online Market
- Contact nameMr. Sam
- Phone86-755-88189785
- AddressN 406,Building n 11,TaiYue Garden Jinhua,Zhejiang
Cold Drawing Machine | Cold Pilger Mill | Cold Rolling Mill | Steel Coil Slitting Line |
Steel Rolling Mill | Steel Slitting Line |
- Medical Hypochlorous acid generator
- OEM ODM essential oils Pain reilef vapor balm menthol cream
- OEM ODM Natural Blend of essential oils with refreshing vapor inhalador menthol refrscantes
- Hygetropin Hygetropin HGH Human Growth Hormone HGH Jintropin Kigtropin Peptides
- Gensci Jintropin-china Jintropin supplier
- Jintropin HGH wholesale price cheap price fast ship
- Clip cap
- Coverall
- Lab coat
- Isolation gown
- Infrared therapy light
- M15 Waterproof Cable For Horticultural Lighting
- Non-Woven Adult Incontinent Nursing Urine Pad
- VASY Brand Vaporizing Tank MOD Vape with 15 Available Favors
- VASY Brand 3000puffs Rechargable Vape PODS With 5pcs Cartridges
- Wipe clean Vinyl Fall Prevention Mats
- nectar collector for 510 thread battery, easy to use and replace 510 Dab Straw Attachment
- 2023 desktop vaporizer automatic atomization bubbler vaporizer for 510 cbd carts and tanks Hybrid duo bubbler vaporizer from Folartech
- Buying Guide to Choose The Best Biochemistry Analyzer
- 2022 Neuer automatischer Zerstäubungs-Bubbler-Vaporizer für 510 cbd-Wagen und -Tanks Hybrid-Duo-Bubbler-Vaporizer von Folartech
- 2022 Nuevo vaporizador burbujeador de atomización automática para carros y tanques de 510 cbd Vaporizador burbujeador dúo híbrido de Folartech
- 2022 New automatic atomization bubbler vaporizer for 510 cbd carts and tanks Hybrid duo bubbler vaporizer from Folartech
- Titanium Sheet,Titanium Plate,Titanium Strip
- new design 510 voltage control 350mah battery with micro usb port for cbd cartridges and tanks
Popular Searches
Find Similar Products By Category
- Health & Medical > Health Care Products > Health Care Supplies > Other Healthcare Supply
- Buy on GoldSupplier.com
- How to Buy
- Browse by Catagories
- Browse by Hot Regoins
- Private Sourcing Events
- Sell on GoldSupplier.com
- How to Sell
- Post Products
- Manage Products
- Manage Groups
- About
- About Us
- Link to Us
- Contact Us
- Sitemap
- Please Enter your Email Address
- Please enter the content for your inquiry.
We will find the most reliable suppliers for you according to your description.
Send Now-
Mr. Sam
Welcome to my shop! Glad to serve you!Please send your question!
Your message has exceeded the limit.
Your message has exceeded the limit.
-
-
Your inquiry content must be between 20 to 5000 characters.Send Now.
-
Please input the mailbox.
-