The tinplate printing products are mainly used for packaging products such as oil tanks, spray cans, beverage cans, food cans, miscellaneous cans, batteries, toys, bottle pots, film boxes and the like with its novel frame design and special fine printing effects. The variety of metal packaging products is complex in specifications. The main products include aluminum two-piece cans, tinplate three-piece beverage cans, food cans, aerosol cans, various bottle caps for 1-20 liters of chemical barrels, canopies, and miscellaneous cans. 35-208 liters capacity of hot and cold rolled steel barrels and tinplate barrels are coated with external printing. There are about 1,500 or so manufacturing companies in the country. According to incomplete statistics, state-owned and state-owned holdings and large collective enterprises left over by history account for 35% , private enterprises account for 30% , Sino-foreign joint ventures account for 28% , and wholly foreign-owned enterprises account for 7%. The industry has good equipment, the United States advanced two-piece can production line 26 import tinplate three-piece can production line 300 or so all kinds of bottle cap imported equipment more than 300 sets ( sets ) , as well as printing iron, iron coating equipment up to 600 About half of them are imported and domestically produced. There are quite a few other equipment with better domestic performance. The metal container industry already has a good foundation.
　　 The development of metal containers is not easy and smooth over 30 years . The "sixth five-year" period is just beginning to develop slowly ; during the "seventh five-year period", the supply and demand relationship between the market is relatively normal and presents a trend of great development; the "eighth five-year" period is the heyday of the printing of metal containers : "9-5" is In the stable period, “10th Five-Year Plan†is a critical period for development, and “Eleventh Five-Year Plan†is a period of quality competition for metal printing, which is a special period for quality to win the market. Therefore, based on the principle of printing, the printing process Technology is the research object and the key to obtaining high-quality metal printing products is the process quality control in the printing process.The tinplate printing has many similarities from the process of separation, printing, proofing, printing to the completion of printing and the printing process of paper products. The place, but after all, is a special process of the printing process, if every process design is similar, but the operation is different. Let's briefly talk about the process design and control points of the tinplate printing.
1 , color separation
At present, most domestic and foreign printing equipments are mainly monochromatic printing machines and two-color printing machines. Due to the limitation of printing equipment and printing materials and the special packaging effect of customers, the printing color effect produced by traditional color separation may be the same as that of customers. The manuscripts provided differ greatly, and at the same time, hidden dangers have been laid for the subsequent printing iron production. In order to avoid overprinting in the multi-color printing is not allowed, the phenomenon of scratches, color is not obvious bright colors, many things such as defective products in the iron with multi-color spot color printing, such as Pan Tong color. In addition to the majority of back-to-back and coarse cable, the total area of ​​the Internet to reduce the number of printing points to expand the smaller the smaller. Therefore, color separation is a key link in printing metal products.
2 , proofing
　　 Iron proofing is both an inspection of the separation film and a preliminary quality analysis and control of the printed iron product. Its printing method uses traditional offset printing. In the proofing process, we need to keep the color sample as a reference in the control of the printing process, so that the stable color of the printing can faithfully reproduce the proofs confirmed by the customer. At the same time, as iron is seldom an integral part of the final product, it is often a component of various processing processes such as various containers, caps, and various miscellaneous products. It is also proofed at the same time as testing the processing performance and matching of the coating. Therefore, in this process, we need to process finished products and put them into the contents, that is, molding tests. For example, the food cans should be tested for the tightness, shelf life, and preservation of the cans.
3 , determine the drawings
　　 Printed iron plans to determine the location of the tinplate positioning rules product arrangement and the product used in coating the coating used in the roll 3 turbulence. The tinplate positioning rule refers to the orientation of the mouth, the direction of the body, and the size. They are the basis for printing and printing ; the arrangement of the products is based on the printing properties of the printing plate . The arrangement of the printing plate is also different, and the printing machine must be considered during the process of determining the alignment. The smallest size and the largest size that can be accepted at the same time make the arrangement the most economical ; the rubber roller is the tool for coating the coating, and the coating method for the products requiring internal coating is full-plate coating, vertical coating, and horizontal coating. There are less empty coating products, and the three coating methods for outer coating products are for foods, which are usually used for horizontal blank coating spray tanks with vertical empty coating, and cans and lid products are usually coated with full-size plates : There are two kinds of coating methods, vertical blank coating and full-plate coating.
4 printing
　　 For can and lid printing, most of the same screens are made into negative or positive images based on the identified product drawings when making lithographs, and exposure and platemaking is performed using a continuous dryer. In this way, dozens of identical images can be printed on a single sheet at the same time. PS plates are used in the production process, and other methods of printing plates with ordinary papers, such as exposure time, development, fixing, rinsing, and the like.
5 , determine the printing materials
　　 Since the use of different products and molding equipment have different process requirements for the tinplate thickness, tin layer, hardness and annealing method, we must determine the above turbulence according to the nature of the product. It must meet the printing requirements and comply with canning, Red box and other requirements, and determine the final printing surface.
6 , Paint
　　 Printed iron is not the ultimate goal, but the beautification of metal packaging, the purpose is to make all kinds of metal containers, such as iron cans, various types of caps, toys and so on. To make the graphic printed on the metal plate colorful, can not do without the special role of the coating, it increases the adhesion between the tinplate and ink film layer, the ink film layer has played a good role in protecting the same time increase the pattern The brightness of the product gives the product a metallic color and does not discolour or paint off during the final molding process. For food can coatings, it prevents chemical and biological contamination of the contents, reduces the possibility of leaking cans, preserves the original flavor of the food, prolongs the storage time of the contents, and allows the contents to be easily poured out of the container. In addition, it also has some special visual effects such as Jin Ke Ding, Explosion Varnish, Wrinkle Oil, Bead Spot Varnish, Matte Oil, etc. These paints are used in wine cans, packaging boxes and so on.
　　 Printing iron coating is mainly composed of film forming substances, pigments, driers, auxiliary agents, solvents, etc. The coating methods and functions can be divided into inner coating, outer coating and varnish. The three kinds of coatings are usually determined according to the nature of the product and the drawings. The coating and coating method used. Since the tinplate is coated with a certain film thickness, the paint must be baked in a baking room, and the baking temperature is very important.
China Threaded Fittings,Pipe Threaded Fittings supplier & manufacturer,
Size: 1/2''~6''
Class Rating: 3000~6000
Facing: RF(raised face);FF(flat face);RTJ(ring type joint);RJ(ring joint face)
TG(tongue and groove face);MFM(male and female face)
Manufacturing process: Push, Press, Forge, Cast, etc.
Material:
Carbon steel:
ASTM A105;
ASTM A266 GR.1,GR.2,GR.3,GR.4
Stainless steel:
304/SUS304/UNS S30400/1.4301
304L/UNS S30403/1.4306;
304H/UNS S30409/1.4948;
309S/UNS S30908/1.4833
309H/UNS S30909;
310S/UNS S31008/1.4845;
310H/UNS S31009;
316/UNS S31600/1.4401;
316Ti/UNS S31635/1.4571;
316H/UNS S31609/1.4436;
316L/UNS S31603/1.4404;
316LN/UNS S31653;
317/UNS S31700;
317L/UNS S31703/1.4438;
321/UNS S32100/1.4541;
321H/UNS S32109;
347/UNS S34700/1.4550;
347H/UNS S34709/1.4912;
348/UNS S34800;
Alloy steel:
ASTM A694 F42/F46/F48/F50/F52/F56/F60/F65/F70;
ASTM A182 F5a/F5/F9/F11/F12/F22/F91;
ASTM A350 LF1/LF2/LF3;
Duplex steel:
ASTM A182 F51/S31803/1.4462;
ASTM A182 F53/S2507/S32750/1.4401;
ASTM A182 F55/S32760/1.4501/Zeron 100;
2205/F60/S32205;
ASTM A182 F44/S31254/254SMO/1.4547;
17-4PH/S17400/1.4542/SUS630/AISI630;
F904L/NO8904/1.4539;
725LN/310MoLN/S31050/1.4466
253MA/S30815/1.4835;
Nickel alloy steel:
Alloy 200/Nickel 200/NO2200/2.4066/ASTM B366 WPN;
Alloy 201/Nickel 201/NO2201/2.4068/ASTM B366 WPNL;
Alloy 400/Monel 400/NO4400/NS111/2.4360/ASTM B366 WPNC;
Alloy K-500/Monel K-500/NO5500/2.475;
Alloy 600/Inconel 600/NO6600/NS333/2.4816;
Alloy 601/Inconel 601/NO6001/2.4851;
Alloy 625/Inconel 625/NO6625/NS336/2.4856;
Alloy 718/Inconel 718/NO7718/GH169/GH4169/2.4668;
Alloy 800/Incoloy 800/NO8800/1.4876;
Alloy 800H/Incoloy 800H/NO8810/1.4958;
Alloy 800HT/Incoloy 800HT/NO8811/1.4959;
Alloy 825/Incoloy 825/NO8825/2.4858/NS142;
Alloy 925/Incoloy 925/NO9925;
Hastelloy C/Alloy C/NO6003/2.4869/NS333;
Alloy C-276/Hastelloy C-276/N10276/2.4819;
Alloy C-4/Hastelloy C-4/NO6455/NS335/2.4610;
Alloy C-22/Hastelloy C-22/NO6022/2.4602;
Alloy C-2000/Hastelloy C-2000/NO6200/2.4675;
Alloy B/Hastelloy B/NS321/N10001;
Alloy B-2/Hastelloy B-2/N10665/NS322/2.4617;
Alloy B-3/Hastelloy B-3/N10675/2.4600;
Alloy X/Hastelloy X/NO6002/2.4665;
Alloy G-30/Hastelloy G-30/NO6030/2.4603;
Alloy X-750/Inconel X-750/NO7750/GH145/2.4669;
Alloy 20/Carpenter 20Cb3/NO8020/NS312/2.4660;
Alloy 31/NO8031/1.4562;
Alloy 901/NO9901/1.4898;
Incoloy 25-6Mo/NO8926/1.4529/Incoloy 926/Alloy 926;
Inconel 783/UNS R30783;
NAS 254NM/NO8367;
Monel 30C
Nimonic 80A/Nickel Alloy 80a/UNS N07080/NA20/2.4631/2.4952
Nimonic 263/NO7263
Nimonic 90/UNS NO7090;
Incoloy 907/GH907;
Nitronic 60/Alloy 218/UNS S21800
SALES@GHSAILINGPIPE.COM
A threaded pipe is a pipe with a thread. They are often used in water gas pipes, small diameter water pipes, compressed air pipes and low pressure steam pipes. The pipe is connected to the pipe end with the thread. The thread can be coated with suitable adhesive (such as thick white paint, lead oxide glycerin adhesive, etc.) to ensure sealing.
There are mainly internal teeth, external teeth, live tube, elbow (elbow), three way pipe, four way pipe (crosshead) and reducer.Manufacturing standards:
GB/T 14383, ASME B16.11, BS 3799, MSS SP 83
Threaded Fittings,Pipe Threaded Fittings,Steel Threaded Fittings,Forged Threaded Fittings
HeBei GuangHao Pipe Fittings Co .,LTD (Cangzhou Sailing Steel Pipe Co., Ltd) , https://www.guanghaofitting.com