NSI B16.5 Railway Spare Parts , Steel Forged Flange DN15 DN600 Size
Brand Name:Kingrail
Certification:ISO
Model Number:SS304
Minimum Order Quantity:Negotiable
Delivery Time:1-30 working days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
Contact Now
Add to Cart
Verified Supplier
Location:
Anshan Anhui China
Address:
Building 1, Cross-border E-commerce Industrial Park, Comprehensive Bonded Zone, Zhengpugang New District, Ma’anshan City, Anhui Province
Supplier`s last login times:
within 1 hours
Product Details
Company Profile
Product Details
NSI B16.5 Railway Spare Parts , Steel Forged Flange DN15 DN600 Size
The full name of die forging is model forging, which is formed by
placing the heated billet in a forging die fixed on the die forging
equipment.
1. Basic process of die forging Die forging process: blanking,
heating, pre-forging, final forging, punching and skinning,
trimming, quenching and tempering, shot peening. Common processes
include upsetting, drawing, bending, punching, and forming.
2. Commonly used die forging equipment Commonly used die forging
equipment includes die forging hammer, hot die forging press, flat
forging machine and friction press.
In layman's terms, the quality of forged flanges is better,
generally produced by die forging, with fine crystal structure and
high strength, of course, the price is also more expensive.
Whether it is a cast flange or a forged flange, it is a common
manufacturing method for flanges. It depends on the strength
requirements of the components to be used. If the requirements are
not high, turning flanges can also be used.
(3) Cut the flange
The inner and outer diameters and thicknesses of the flange are
directly cut on the middle plate, and then the bolt holes and water
lines are processed. The flanges produced in this way are called
cut flanges, and the maximum diameter of such flanges is limited by
the width of the middle plate.
(4) Rolled flange
The process of cutting the sliver with a medium plate and then
rolling it into a circle is called rolling, which is mostly used in
the production of some large flanges. After the roll is successful,
it is welded, then flattened, and then processed by the process of
water line and bolt hole.
NSI B16.5 Carbon Steel Flanges Weld Neck Forged Or Casting Production
Introduction of forged flange customized production EN1092 DN150 PN16 Raised Face Stainless Steel Pipe Plate Flange
The production process is mainly divided into four types: forging,
casting, cutting and rolling.
(1) Cast flange and forged flange
The cast flange has accurate shape and size of the blank, small
processing volume and low cost, but has casting defects (porosity,
crack, inclusion); the internal organization of the casting is less
streamlined (if it is a cutting part, the streamlined shape is even
worse);
Forged flanges generally have lower carbon content than cast
flanges and are not easy to rust, the forgings are streamlined, the
structure is relatively dense, and the mechanical properties are
better than those of cast flanges;
Improper forging process will also cause large or uneven grains,
hardening cracks, and forging costs are higher than casting
flanges.
Forgings can withstand higher shear and tensile forces than
castings.
The advantage of casting is that it can produce a more complex
shape and the cost is relatively low;
The advantage of forgings is that the internal structure is
uniform, and there are no harmful defects such as pores and
inclusions in the castings;
The difference between cast flanges and forged flanges is
distinguished from the production process. For example, centrifugal
flanges are a type of cast flanges.
Centrifugal flanges belong to the precision casting method to
produce flanges. Compared with ordinary sand castings, this type of
casting has a much finer structure and improved quality, and is not
prone to problems such as loose organization, pores, and trachoma.
First of all, we need to understand how the centrifugal flange is
produced, the process method and product of centrifugal casting to
make flat welding flange, which is characterized in that the
product is processed through the following process steps:
① Put the selected raw material steel into the intermediate
frequency electric furnace for smelting, so that the molten steel
temperature reaches 1600-1700 ℃;
② Preheat the metal mold to 800-900℃ to maintain a constant
temperature;
③ Start the centrifuge, and pour the molten steel in step
④ Naturally cool the casting to 800-900℃ for 1-10 minutes;
⑤ Cool with water to near normal temperature, demould and take out
the casting.
Let's take a look at the production process of forged flanges:
The forging process generally consists of the following procedures,
namely, selecting high-quality steel billets, blanking, heating,
forming, and cooling after forging. Forging process methods include
free forging, die forging and fetal membrane forging. During
production, different forging methods are selected according to the
quality of the forgings and the number of production batches.
Free forging has low productivity and large machining allowance,
but the tool is simple and versatile, so it is widely used for
forging single-piece and small-batch forgings with simple shapes.
Free forging equipment includes air hammer, steam-air hammer and
hydraulic press, etc., which are respectively suitable for the
production of small, medium and large forgings. Die forging has
high productivity, simple operation, and easy mechanization and
automation. Die forgings have high dimensional accuracy, small
machining allowance, and more reasonable distribution of fiber
structure, which can further improve the service life of parts.
The basic process of free forging: During free forging, the shape
of the forging is gradually forged from the blank through some
basic deformation processes. The basic processes of free forging
include upsetting, drawing, punching, bending and cutting.
1. Upsetting Upsetting is the process of forging the raw material
in the axial direction to reduce its height and increase its
cross-section. This process is commonly used for forging gear
blanks and other disc-shaped forgings. Upsetting is divided into
two types: full upsetting and partial forging.
2. Lengthening Lengthening is a forging process that increases the
length of the blank and reduces the cross-section. It is usually
used to produce blanks for shafts, such as lathe spindles,
connecting rods, and the like.
3. Punching A forging process in which a punch is used to punch
through holes or non-through holes in a billet.
4. Bending A forging process in which a billet is bent into an
angle or shape.
5. Torsion A forging process in which one part of a billet is
rotated by a certain angle relative to another.
6. Cutting A forging process in which the blank is divided or the
head is removed.
(2) Die forging
Main Testing and Inspection Device
| No. | Device | Type | Qty | Status | Note |
| 1 | End quenching machine | DZJ-I | 1 | working | Testing |
| 2 | Electric resistance furnace | SX2-8-12 | 2 | working | Testing |
| 3 | Inverted metallurgic microscope | 4XCE | 1 | working | Inspection |
| 4 | High temperature box resistance furnace | SX2-4-13 | 1 | working | Testing |
| 5 | Automatic digital display Rockwell hard-tester | 200HRS-180 | 1 | working | Inspection |
| 6 | Electronic Brinell hardness tester | THB-3000 | 1 | working | Inspection |
| 7 | HR-150B Rockwell hardness tester | HR-150B | 1 | working | Inspection |
| 8 | Rapid multi-element analyzer | JS-DN328 | 1 | working | Inspection |
| 9 | Electric arc furnace | JSDL-8 | 1 | working | Testing |
| 10 | Rapid multi-element analyzer(C & S) | JS-DN328 | 1 | working | Inspection |
| 11 | Infrared thermometer | AR872 | 2 | working | Inspection |
| 12 | Portable chemical composition analyzer | AR872 | 2 | working | Inspection |
| 13 | Test specimen sampler | KW30-6 | 1 | working | Inspection |
NSI B16.5 Railway Spare Parts , Steel Forged Flange DN15 DN600 Size
Inquiry Cart
0