High Precision Cold Roll Tube Forming Rollers
Graphite is an elemental element of elemental carbon. Each carbon atom is surrounded by three other carbon atoms (arranged in a honeycomb-like hexagon) to covalently bond to form a covalent molecule.
Since each carbon atom emits an electron, the electrons are free to move, so the graphite belongs to the conductor. Graphite is one of the softest minerals, and its use includes the manufacture of pencils and lubricants. Carbon is a non-metallic element that is located in the second periodic IVA family of the periodic table.
The specific use of graphite
1, for refractory materials, including refractory bricks, crucible, continuous casting powder, casting core, mold detergent and high temperature materials.
Magnesium carbon brick refractory material is the mid-60s, developed by the United States; in the world of magnesium carbon brick has been widely used in steel, and has become a traditional use of graphite. Aluminum carbon brick aluminum carbon refractories are mainly used for continuous casting, flat billet from the pipeline of the protective cover, underwater nozzle and oil well blasting tube.
Made of graphite and refractory crucible and its related products, such as crucible, curved neck bottles, plugs and nozzles, etc., with high fire resistance, low thermal expansion, melting metal process, by metal infiltration and erosion But also stable, good thermal shock stability at high temperatures and excellent thermal conductivity, so the artifacts and its related products are widely used in direct melting metal process.
2, steelmaking
Graphite and other impurity materials can be used as carbonizers in the steelmaking industry. Carburizing uses a wide range of carbonaceous materials, including artificial graphite, petroleum coke, metallurgical coke and Natural Graphite. In the world of steel-making carbon-based graphite is still one of the main uses of earth-like graphite.
3, for the conductive material
Graphite in the electrical industry is widely used as electrodes, brushes, carbon rods, carbon tubes, mercury rectifier cathode, graphite gaskets, telephone parts, TV picture tube coating and so on. Among them, Graphite Electrode is the most widely used, in the smelting of various alloy steel, ferroalloy, the extensive use of graphite electrodes. The graphite used in the electrical industry is very demanding on grain size and grade.
4, for wear and lubrication materials
Graphite is often used as a lubricant in the machinery industry. Lubricants are often not used in high-speed, high-temperature, high-pressure conditions, and graphite wear-resistant materials can be 200 ℃ a 2000 ℃ temperature and at a high sliding speed (loom / s) without lubricating oil work. Many of the equipment that transport corrosive media, widely used graphite materials made of piston rings, seals and bearings, they run, do not need to add lubricants, graphite milk is also a lot of metal processing (wire drawing, pull tube) when the good lubricant.
5, for corrosion-resistant materials
Graphite has good chemical stability. After special processing of graphite, with corrosion resistance, good thermal conductivity, low permeability and other characteristics, and widely used in the production of heat exchangers, reaction tank, condensate, combustion tower, absorption tower, cooler, heater, filter Pumps and other equipment. These equipment for the petrochemical, hydrometallurgical, acid and alkali production, synthetic fiber, paper and other industrial sectors, can save a lot of metal materials.
6, for the atomic energy industry and the defense industry
Graphite has a good neutron deceleration performance, the earliest as a slowdown agent for atomic reactors, "uranium-graphite" reactor is currently used more of an atomic reactor. As the power of the atomic energy reactor in the slowdown material should have a high melting point, stable, corrosion-resistant properties, graphite can meet the above requirements.
7, for anti-scaling anti-rust materials.
Graphite can prevent boiler fouling. Tests have shown that adding a certain amount of Graphite Powder to the water prevents the surface of the boiler from scaling. In addition, graphite coated with metal chimneys, roofs, bridges, pipes can be anti-corrosion and rust.
8, graphite new use
1) Flexible graphite products. Flexible graphite, also known as expanded graphite, is the 1970s developed a new graphite products. 1971 US research success of flexible graphite sealing material, to solve the problem of atomic valve leakage, followed by Germany, Japan, France also began to develop production. In addition to this product has the characteristics of natural graphite, but also has a special flexibility and flexibility. Therefore, it is an ideal sealing material, widely used in petrochemical, atomic and other industrial fields, the international market demand growth year after year.
2) the production of semi-metallic friction materials. Since the 1970s, clutches and automatic liners have been widely used semi-metallic friction materials. Semi-metallic friction material is the graphite and metal powder, steel fiber, clay powder made of synthetic resin. These automatic lining can be used for high-speed equipment such as aircraft, trucks and off-road vehicles, and clutch pads.
Carbon Graphite,Graphite Mineral,Monolithic Graphene,Graphite Crystal Fengcheng Ruixing Carbon Products Co., Ltd , https://www.lnfcrxts.com
Product Details:
The main products of our company include welding pipe roll die and cold roll forming die.Based on the demand of customers,our company undertakes various round pipe,cold roll formed,round-square,directly square,double curved surface straightening roll and double involute die,etc. with materials of GCr15, cR12, Cr12MoV, SKD11, D2, Cr12Mo1V1, 3Cr2W8V, H13, 9Cr2Mo, and wear resistant RE high chrome cast iron.
Round pipe die covers various sizes of dia 8-711mm,and the side of square pipe die can be as long as 600mm.
U-shaped die can be 630×432×6,while U-shaped,T-shaped,Z-shaped and V-shaped steel piles can also be made.
Our company also designs and manufactures abnormally shaped dies of shapes according to customers' requirements.
Our Advantage:
A.Advanced groove deformation technology
After  years  of  practice  and  exploration,  our  company   starts  from  the corporate   status  quo,  using  a
combination   of molding   concept,  that  one  set  of  rollers  can  produce  dozens   of standard   square  and
rectangular tube, to  achieve roll change  not unloading roll  axis, the change time  is greatly reduced,  the unit
performance greatly improving , roll costs being reduced .
B.Strict raw material control
1.Germany imported portable spectrum analyzer Â
(Handheld * Fluorescence BRUKER SI TITAN MODE1600 )Â Inspect the chemical composition of raw materials.
2.Metallurgical Microscope MV6000
Monitor the  transformation process  of the  fiber tissue  before and after heat treatment quenching
3.Germany   imported   desktop  direct   reading   optical spectrum analyzer
Inspection of the chemical composition raw materials
4.Digital ultrasonic flaw detector
Flaw detection for the raw materials, heat-treated roll, finished products before shipment.
C.Professional heat treatment technology
Unique heat treatment technology gives full play to comprehen-sive mechanical property of the  material, and the roll has better
characteristics of  wear resistance, durability and  fatigue resis-tance.
During  heat  treatment  process,   computer  control  is  applied(±1°)to ensure quenching quality.
D.Excellent equipment is an important guarantee to make quality rollers.
E.Roller quality was widely praised by users due to its strict quality standard and meticulous product inspection.
Packing and Delivery 
Contact us:
If you have interest,please do not hesitate to contact me.Pls send the drawing,technical requirements to us by email.Â
Looking forward to receiving your inquiry and reply.Thank you.
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