Dear partners, colleagues, and friends:
Good afternoon!
In the complicated international and domestic economic trend, Shinestar group with you hand in hand, steady steps over 2015, jingling and ushered in the 2016!
Over the past year, Shinestar group added several parts in the process of the development of the globalization strategy: Dubai, Sydney overseas department and Wuhan branch were set up; Nanchang, Tianjin two production base completed and put into operation; Group research and production platform has become increasingly mature and perfect. Today, Shinestar created 16 subsidiaries, as well as the global coverage, highly competitive sales trade network, has grown to the domestic level top steel pipe integrated supplier.
We have no intention to indulge the glory of our past, because, every step of our development is a small step for a goal to build "steel pipe integrated supplier in the field of benchmarking enterprise". Thanks for all of you to create today's achievements, and will promote Shinestar towards a brilliant future.
Finally, I wish everyone good health, work well, family happiness!
Let us work together, jointly build a good 2016!
First, reasonable selection. Straight pipe joints should choose a good micro deformable material straight seam steel pipe steel, for carbide segregation serious straight seam steel casting steel should be reasonable and transfer of heat treatment, larger and unable to cast a straight seam steel pipe steel may be solution bis refined heat treatment. Reasonable choice of heating temperature control heating rate, on a straight seam steel pipe can be heated slowly, preheat and other ways to reduce heating balanced straight seam steel pipe heat deformation.
Second, the correct heat treatment process operation and reasonable heat treatment process is also a useful way to reduce the distortion of straight pipe joints. Straight seam steel pipe deformation reason is often messy, but we only need to master the rules of the deformation analysis of the onset of the reason, the choice of avoiding abnormal deformation method of straight pipe joints can be reduced, and also can be controlled.
Third, straight seam steel pipe to be pre-heat treatment to eliminate the machining process of the remaining episodes of stress. For straight seam steel pipe, in the case of the conditions allow, try to use cryogenic vacuum heat treatment and quenching after quenching. In ensuring straight seam steel hardness of the premise, try to use pre-cooling, grading cooling quenching or austempering process.
Fourth, straight seam steel pipe planning portrayed to be reasonable, not too poor thickness, shape to symmetrical, straight pipe joints on large deformation deformed to master the rules, to reserve allowance, on a large, straight seam steel pipe can be used in combination plan. For some precision messy straight seam steel pipe can be used pre-heat treatment, aging heat treatment, quenching and nitriding heat treatment to control the accuracy of straight pipe joints. When the patch straight seam steel trachoma, porosity, wear and other defects, the choice of cold welding and other small heat-affected patch repair equipment, to prevent the onset of deformation process.
Precision steel tubes is a kind of seamless steel pipe. Precision tubes features:
1. The cold-rolled precision steel tolerances and high precision, product precision control 卤 5mm, outer wall finish, the surface oxide layer.
2. The cold-rolled precision steel comprehensive performance excellent, able to withstand high pressure, cold bending, flaring, flattening no crack, no wrinkled skin, can do a variety of complex deformation and mechanical processing.
3. The promotion and application of precision seamless steel can save and improve processing effectiveness, reduce the manufacturing processes and equipment investment, can save costs and greatly reduce machining time, improve production and material utilization, and help to improve product quality, reduce cost.
Precision tubes uses: precision cold-rolled steel is widely used in automobiles, motorcycles, electric cars, petrochemical, power, shipbuilding, aerospace, areas of bearings, pneumatic components, the low-pressure boilers.
Surface microcracks of lsaw steel pipe impact on product quality greatly, ranging from commuted, while in retirement, especially niobium, vanadium, titanium Longitudinal most prominent, has seriously affected the improvement of product quality and finished product rate. This not only gives the enterprise has brought huge economic losses, but also restricts the development of varieties of plate production line. Longitudinal surface microcracks mainly has edge crack, longitudinal, star cracks, its causes both improper rolling process parameter control, there are abnormal production of continuous casting process, the slab cracks genetic, residual element enrichment.
Longitudinal surface microcracks severely affect product quality. Longitudinal surface micro cracks main reason is the continuous casting mold copper coating off. This aspect will lead to copper penetration into the solidified shell austenite grain boundaries, grain boundary cracks; on the other hand will be uneven due to thermal stress cracks and crack sensitivity containing titanium steel strong performance is particularly evident . Control measures: To improve the quality of mold copper, copper to prevent dew; strengthen inspection before production of slab quality and production after Longitudinal; Longitudinal protection through good casting and other measures to improve Longitudinal steel cleanliness.
LSAW steel pipes (UOE, JCOE) manufacturing processes, welding processes are set to continuous advance. Its role is to be finalized after the tube forming, shaping and positioning within the weld seam on the back cover, in order to ensure the pipe dimensions and is conducive to tube welded pipe to improve quality and production efficiency.
Pre-welding process
After forming the tube by the next roller conveyor transported to a pre-welder's torch, rising rotating roll, rotate to adjust an open position to weld at the top of both sides of the pressure on the pressure roller and the pressure roller so that the tube seam, drop gun and adjust the tracking of the weld seam, open the protective gas and cooling water, start welding, welding condition monitoring, welded to the tube end welding arc stops (automatic delay stop gas), lift the gun and the top pressure rollers, pipe welder pre sent , pipe ends and welding defects.
Pre-welding process characteristics
Pre-welding using Ar + CO2 mixed gas shielded arc welding, continuous welding seam on the back of the tube to move at a faster speed. Since the bevel angle, tube shape, the tube along the longitudinal direction of the opening and both sides of the plate edge distortion factors of inequality, forming the seam after seam quality is not stable, larger changes. Need to change the tube seam welding, the arc of a steady state, the weld position deviated from the case and other real-time tracking and adjusted accordingly. Thus presoldered have welding speed, impact seam quality factors, changes and adjustments randomness and other characteristics.
Ex Works (EXW)
This term means that the seller delivers when it places the goods at the disposal of the buyer at the seller’s premises or at another named place (i.e., works, factory, warehouse, etc.). The seller does not need to load the goods on any collecting vehicle, nor does it need to clear the goods for export, where such clearance is applicable.
Free Carrier (FCA)
This term means that the seller delivers the goods to the carrier or another person nominated by the buyer at the seller’s premises or another named place. The parties are well advised to specify as clearly as possible the point within the named place of delivery, as the risk passes to the buyer at that point.
Carriage Paid To (CPT)
This term means that the seller delivers the goods to the carrier or another person nominated by the seller at an agreed place (if any such place is agreed between parties) and that the seller must contract for and pay the costs of carriage necessary to bring the goods to the named place of destination.
Carriage and Insurance Paid To (CIP)
This term means that the seller delivers the goods to the carrier or another person nominated by the seller at an agreed place (if any such place is agreed between parties) and that the seller must contract for and pay the costs of carriage necessary to bring the goods to the named place of destination. The seller also contracts for insurance cover against the buyer’s risk of loss of or damage to the goods during the carriage. The buyer should note that under CIP the seller is required to obtain insurance only on minimum cover. Should the buyer wish to have more insurance protection, it will need either to agree as much expressly with the seller or to make its own extra insurance arrangements.
Delivered at Terminal (DAT)
This term means that the seller delivers when the goods, once unloaded from the arriving means of transport, are placed at the disposal of the buyer at a named terminal at the named port of place of destination. “Terminal” includes a place, whether covered or not, such as a quay, warehouse, container yard or road, rail or air cargo terminal. The seller bears risks involved in bringing the goods to and unloading them at the terminal at the named port or place of destination.
Delivered at Place (DAP)
This term means that the seller delivers when the goods are placed at the disposal of the buyer on the arriving means of transport ready for unloading at the named place of destination. The seller bears all risks involved in bringing the goods to the named place.
Delivered Duty Paid (DDP)
This term means that the seller delivers the goods when the goods are placed at the disposal of the buyer, cleared for import on the arriving means of transport ready for unloading at the named place of destination. The seller bears all the costs and risks involved in bringing the goods to the place of destination and has an obligation to clear the goods not only for export but also for import, to pay any duty for both export and import and to carry out all customs formalities.
Free Alongside Ship (FAS)
This term means that the seller delivers when the goods are placed alongside the vessel (e.g., on a quay or a barge) nominated by the buyer at the named port of shipment. The risk of loss or damage to the goods passes when the goods are alongside the ship, and the buyer bears all costs from that moment onwards.
Free on Board (FOB)
This term means that the seller delivers the goods on board the vessel nominated by the buyer at the named port of shipment or procures the goods already so delivered. The risk of loss of or damage to the goods passes when the goods are on board the vessel, and the buyer bears all costs from that moment onwards.
Cost and Freight (CFR)
This term means that the seller delivers the goods on board the vessel or procures the goods already so delivered. The risk of loss of or damage to the goods passes when the goods are on board the vessel. The seller must contract for and pay the costs and freight necessary to bring the goods to the named port of destination.
Cost, Insurance and Freight (CIF)
This term means that the seller delivers the goods on board the vessel or procures the goods already so delivered. The risk of loss of or damage to the goods passes when the goods are on board the vessel. The seller must contract for and pay the costs and freight necessary to bring the goods to the named port of destination.
The seller also contracts for insurance cover against the buyer’s risk of loss of or damage to the goods during the carriage. The buyer should note that under CIF the seller is required to obtain insurance only on minimum cover. Should the buyer wish to have more insurance protection, it will need either to agree as much expressly with the seller or to make its own extra insurance arrangements.
Would you like to have the most promising platform for career development?
Would you like to get the working enviroment like that respect individuality, loose and comfortable? Would you like to own the forefront of the field of vision in the steel industry at home and abroad? Would you like to be a marketing elite in three years and become a millionaire in five years?
All of these are not a dream. Shinestar will give everything you want.
Millionaires building plan -- Shinestar Group 2016 recruitment is fervent in undertaking. Allying with successful person, Companing with finest person
Shinestar warmly welcome you Let's talk, let's change!
Talking about the reality:
You can get what you can think of, unexpectedly will be more!
Provide room and board (lunch and dinner), five insurance payments, charges for travel and phone, marriage/birthday/ children money award, traditional festivals benefits, car allowance, a
variety of personalized service incentive mechanism ......
Talking about the environment:
What more important than salary is - suitable!
A group of young people who are full of passion and positive energy of the team, as you partner;
Good working environment, full of humanity, willing to share,relaxed team atmosphere, waiting for you to join!
2016 Best HRM Business Model, Shinestar deserved!
About Dreams:
Being talents in 3 years,Millionaires in 5 years!
Big margin of improvement and promotion mechanism are prepared for you.
Perfect training and career planning to help you succeed!
Fly your dreams,exercise your talents,We will give you a wonderful life!
Recruiting Position:
Foreign trade sales:15
foreign trade accounting:1
Vouching Clerk:2
Sales Representative:10
Warehouse Supervisor: 2
SEOer:2
Recruitment time:
February 2016 - March 2016
Recruitment Location:
22 floor of Royal Wing Building in Longchamp International Mansion and Wuhan Branch
Recruitment channels:
We will provide you 3 ways to help realize your dreams:
Talent website: Pls log on recruitment websites ,such as ZHILIAN Zhaopin, QIANCHENG WUYOU, ZHONGGUO RENCAI REXIAN,ZHONGHUA YINGCAI,HUNANRENCAI to search Shinestar,
understand jobs information, apply for jobs of interest!
Resume delivery: send your resume to 2853239599@qq.com, waiting for an interview;
Phone reservations: Call Shinestar Recruitment Hotline 0731-84459688 or 88,678,566 for an appointment.
Group profile:
Shinestar Holdings Limited group, is the world's overall steel procurement service provider for all domestic and international steel buyers, providing production, purchasing, marketing,
processing, logistics, information in one of the overall service.
We Shinestar Holdings Group, founded in 1993, have RMB 280 million registered capital, and is the top 500 of private enterprise, top 50 of steel sales in China; Also stand top 100 of Hunan
private enterprise, ranked 3rd place among China's steel exporters, No.1 in steel sale in Hunan. Our group own 16 subsidiaries, including 11 domestic trading subsidiary companies, research
and development subsidiary company and 5 international trading subsidiary companies. Shinestar have over 600 employee in all. In the past 2015, we have reached 1.2 million tons on steel
quantity,and sales income exceeding 4 billion.
SHINESTAR will insist on our international developing strategy and expanding our international market step by step, area by area. Our company mission is to promote internal staff achievements and support external customers’ success. Taking advantage of our excellent staff competition, professional operation management, reliable product quality, efficient cost control management and integrated procurement services to solve clients problems and create value, to create “a big platform”to our staff, to promote our business growth,and ultimately to create“ a leading
steel procurement service provider”
Due to the high hardenability and strengthening the role of alloying elements, some high strength martensitic stainless steel, high speed tool steel and high-strength alloy steel. Often in the quench (or tempering) after a high-temperature tempering, the steel carbide appropriate aggregation obtain coarse carbide particles tempered sorbite organization (with ball annealing similar organizations) Thus, this delivery steel state has good cutting performance cooling directly after delivery, known as hot rolling or forging state, after hot rolling or forging steel and not subject to special heat treatment. Hot rolling (forging) termination temperature is generally 800-900 ℃, after the general natural cooling in the air, and thus hot rolling (forging) state corresponds to normalizing. Unlike strict normalizing heating temperature control, the difference because of hot-rolled (forging) termination temperature high and low. Thus it is well done microstructure and properties of the steel shaken ratio.
1. That many steel companies controlled rolling, since the finishing temperature control is very strict and forced cooling after finish rolling to take measures so that grain refinement of steel, delivery of steel with high mechanical properties. Since the appearance of the skin is covered with a layer of iron oxide, which has a certain degree of corrosion resistance, as stringent storage requirements are not kept cold drawn (rolled) state delivery of steel, medium-sized steel, thick steel plate can be in the open air yard or through thatch cover and store the non-twist and controlled cooling hot rod location is the truth, hot-rolled (forging) state of delivery than ordinary steel hot rod performance.
2. Cold drawn (rolled) on steel hardenability without any heat treatment and direct delivery, the status of the cold drawing, cold-rolled steel cold forming. Called cold-drawn or cold-rolled condition. Cold-drawn steel dimensions (rolled) state of high accuracy, good surface quality, appearance roughness is low, and have high mechanical properties, compared with the hot rolling (forging) state. Since the cold drawn (rolled) state of delivery without scale steel outer cover, and there is a big stress, vulnerable to corrosion or rust, and thus cold drawn (rolled) state steel, packaging, storage and transportation are more stringent requirements, generally need to be in the custody of the Treasury, and the Treasury should pay attention to the temperature and humidity control the delivery state within the state, said normalizing. Since normalizing heating temperature (hypoeutectoid steel as Ac3 + 3050 ° C eutectoid steel as Accm + 3050 ° C than hot-end temperature control strict,
3. Before normalizing the status of the steel factory and normalizing heat treatment. Thus the structure of the steel, a uniform performance. Since normalizing cooling faster, compared to steel annealed state. Pearlite structure of the steel increased number of pearlite lamellar and grain refinement of steel, and thus have higher mechanical properties, and help to improve the low carbon steel widmanstatten and eutectoid steel cementite net, for further heat treatment of the finished product do organizational readiness.
Molding method for manufacturing large diameter lsaw steel pipe are UOE molding method, a row of roll forming method (CFE), CE molding. For the vast majority of the final steps of the molding process is to conduct a post-weld tube expanding full-length, in order to improve the quality of welded steel pipe shape. Expanding become large-caliber Longitudinal production to ensure the quality of the finished tube an important process.
Expanding is a use of hydraulic or mechanical means from urging the steel pipe along the pipe wall bulged radially outward pressure molding process. Mechanical than hydraulic mode, the device is simple and more efficient, the world's most advanced large-caliber Longitudinal several enlarged diameter pipeline system processes are adopted, the process is as follows: Mechanical expanding the use of the split-side portion of the enlarged diameter of the segments radially expand, so the tube along the longitudinal direction in a stepwise manner to achieve the full length of the tube segments of plastic deformation process. It is divided into five stages
1. Initial stage full circle. Segments open until all the segments are exposed to the pipe wall, this time within the range of steps at various points within the steel tube radius are almost identical, steel preliminary full circle.
2. The nominal inside diameter of the stage. Segments from the front position began to decrease velocity, until you reach the desired position, this position is within the quality requirements of the finished pipe circumferential position.
3. Springback compensation stage. Segments in position to start the second stage further low speed until you reach the desired position, this position is within the missile complex process design requirements of previous pipe circumferential position.
Process to Spiral Steel Pipe
Spiral pipe processing means on the basis of the original spiral pipe manufactured in accordance with the requirements of the requirements of the desired product.
There are two common spiral pipe processing methods.
First, the thermal expansion method
1. bulging law
One is placed in a rubber tube, with the upper punch compression, the tube shaped projection; Another method is forming a hydraulic bulging in the middle of the tube filled with liquid, the liquid pressure of the tube to the desired shape of the drum, bellows Most of the production is used in this method.
2. forging method
By swaging machine will be part of the red end of the tube or extension, reducing the outer diameter, commonly swaging machine has a rotary, link type, roller.
3. The bending method
There are three methods more commonly, a process called stretching method, another method called stamping method, a third roller method, a roller 3-4, two fixing rollers, a steering roller, fixing roller pitch adjustment, the finished tube It is curved.
4. stamping
In the punch with a core tapered end of the tube to expand to the required size and shape.
5. rolling method
Generally do mandrel, suitable for thick-walled tubes inside of the circle edge.
6. The roller method
The core is placed in the tube, with the outer periphery of the roller pushing for round edge processing.
Second, anti-corrosion method
Such steel is that people often say that the corrosion spiral steel pipe, this processing method is defined as the surface layer and the inner spiral pipe coated with a chemical coating, a common form of corrosion 3pe corrosion, anti-corrosion epoxy resin, cement mortar corrosion, such processing method biggest goal is to extend the life of the pipeline.
Proper way to preserve spiral pipe
1) Storage space spiral steel pipe products or warehouse, should be selected in clean, smooth drainage area, away from harmful gases or dust in factories and mines. The presence on the ground to clear the weeds and all the debris, keeping a clean steel
2) In a warehouse not with acid, alkali, salt, cement, steel and other aggressive materials stacked together. Different varieties of steel should be stacked separately, to prevent confusion, to prevent contact corrosion
3) Large steel, rail, steel disgrace, large diameter steel pipe, forgings, etc., may open dumps
4) Small and medium steel, wire rod, rebar, medium diameter steel pipe, steel wire and wire rope, etc., can be expected in a well-ventilated storage shed, but it must be the underlying thatch
5) Some small steel, sheet, strip, silicon, or thin-walled small-diameter steel pipes, all kinds of cold-rolled, cold-drawn steel products and high prices, corrosive metal products, can be stored for storage
6) A warehouse should be based on selected geographical conditions, the general ordinary enclosed warehouse, that is the roof with walls, doors and windows tight, with the Treasury ventilation device
7) Requires the Treasury sunny attention to ventilation, rain close attention to moisture, keep the appropriate storage environment
The causes of large diameter spiral pipe wrong side: large diameter spiral steel pipe production, the wrong side have occurred with many of its factors. In the production practice, often the wrong side of the ultra-poor leaving dry pipe downgrade. Therefore analyze the causes and prevention of large diameter spiral pipe produced the wrong side is necessary.
1, the strip camber is caused by the wrong side of the main factors pipe. In forming the spiral welded pipe, steel strip camber angle will constantly change shape, leading to changes in the weld gap, resulting in open seams, wrong side or even take sides. Seriously affecting the quality of steel, so the observation camber steel strip coil-after by controlling the vertical roll can be cut to make the disc as well as the continuous removal of part of camber angle control and corrective shaping is to reduce the camber of the strip in the production process effective way to produce the wrong side.
2, due to the poor without trimming strip head and tail of shape and dimensional accuracy, could easily lead to hard docking strip caused by bending the wrong side.
3, strip head and tail welding butt weld reinforcement is larger when over molding if not handled properly, is likely to cause greater wrong side.
4, the strip edges in poor condition is another important cause of the wrong side of.
