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Introduction Of Home Appliance Sheet Processing And Coating Process

Except For Color-Coated Sheets, All The Outer Covering Parts Of Household Appliances Need To Be Painted Before They Are Made Into Finished Products, So As To Improve The Service Life And Decorative Properties Of Steel Parts In Household Appliances.   Improve The Service Life Of Steel Parts In Home Appliances All Steel Parts Are Rusted And Rotted In The Air Due To Contact And Penetration With Corrosive Media (O2, H2O, CI, Etc. In The Air) Until They Lose Their Original Mechanical Strength. In Order To Delay The Occurrence Of Corrosion, The Most Common Method Is To Apply An Organic Coating On The Surface Of The Steel Parts To Isolate The Steel Parts From The Corrosive Medium And Play A Role In Physical Protection.   Decorative Through The Application Of Organic Coating, The Cold And Monotonous Appearance Of The Steel Plate Can Be Completely Changed. The Organic Coating Can Endow The Steel Plate With Various Colors And Textures To Meet The Aesthetic Requirements.   Home Appliance Sheet Processing Process The Conventional Processing Process Of Home Appliance Steel Parts Is As Follows:   Shearing - Stamping - Degreasing - Rinsing - Surface Conditioning - Phosphating - Rinsing - Passivation (Sealing) - Drying - Powder Coating - Baking And Curing   Degreasing Process   There Are Two Commonly Used Degreasing Processes: Alkaline Water-Based Degreasing And Organic Solvent Degreasing. Alkaline Water Agent Degreasing: The Alkaline Chemical Degreasing Agent Is In Contact With The Anti-Rust Oil Film On The Surface Of The Steel Plate By Spraying, Brushing, Dipping, Electrolysis, Etc. And Has A Physical And Chemical Reaction To Remove The Anti-Rust Oil Film And The Carbon Residue Adsorbed During The Production Process Of The Steel Plate. , Iron Powder And Other Foreign Objects Are Removed. Commonly Used Alkaline Degreasing Agents Are Made By Dissolving Alkali Metal Salts Such As NaOH, Na2CO3, Na3PO4 And Other Compound Surfactants In Water In Proportion; And The Alkali Resistance Of The Organic Film, The Alkalinity Of The Degreaser Should Be Moderately Reduced. When Working, The Oil Is Emulsified Into A Milk-Like Mixture-Emulsion Through The Penetration, Infiltration, Emulsification And Dispersion Of The Oil Film, And Wraps Impurities Such As Carbon Powder And Iron Powder, And Leaves The Steel Plate And Enters The Degreasing Solution To Achieve Degreasing And Cleaning. Organic Solvent Degreasing: The Oily Metal Workpiece Is Placed In The Steam Of Trichloroethane, Trichloroethylene, Etc. To Remove The Oil Film From The Metal Surface. By Dissolving And Diluting The Rust Preventive Oil With Organic Solvents, The Oil With High Viscosity Is Reduced To A Very Low Viscosity, So That The Oil And The Metal Surface Are Loosened, And Then Washed Away By The Solvent Surrounding It. In Order To Strengthen The Dissolution Effect, Ultrasonic Cleaning Is Often Supplemented. When The Surface Of Electro-Galvanized/Hot-Dip Galvanized Fingerprint-Resistant Steel Plate Is Slightly Stained, It Can Be Wiped With A Clean Soft Cloth Dipped In Ethanol Or Propanol To Achieve The Effect Of Decontamination And Cleaning.   Phosphating Process And Basic Principle Phosphating Treatment Is To Place The Metal To Be Treated In A Phosphating Solution, And A Dense Chemical Conversion Film Is Formed On The Surface Through The Reaction Of Dihydrogen Phosphate And The Metal In The Phosphating Solution As A Chemical Pretreatment For Spraying Organic Coatings. The Treatment Method Is Usually Spraying Or Dipping. The Phosphating Of Household Appliances Is Mainly Based On Pseudo-Conversion Type Phosphating, And A Very Small Amount Of Conversion Type Phosphating Is Used (Only Applicable To Cold-Rolled Sheets). The Former Has Good Adhesion And Corrosion Resistance, While The Latter Has Better Processability And Shorter Processing Time, And Is Suitable For Fast Assembly Lines. Phosphating Can Convert The Activity Of The Metal Surface To A Minimum, And Reduce The Subsequent Corrosion Reaction To A Minimum. Phosphating Films Can Provide A "Rough Surface" To The Metal, Providing A Good Bite To Paint Or Other Organic Films And Enhancing Their Adhesion. The Equipotential And Insulating Properties Of The Phosphide Film Inhibit The Under-Film Corrosion Propagation Of The Organic Coating. Galvanized Steel Sheet Has Good Anti-Perforation Corrosion Performance Due To The Sacrificial Anode Protection Of Zinc Layer After Coating. Cold-Rolled Sheet Can Form Me2Fe(PO4)2·4H2O Crystals With Excellent Alkali Resistance Due To The Fe Content In The Phosphating Film. There Is Thus An Advantage In Preventing The Propagation Of Corrosion Under The Film.   Common Spraying Processes And Basic Principles The Most Commonly Used Spraying Process In Home Appliance Manufacturing Is Electrostatic Powder Coating. The Electrostatic Powder Coating Method Uses The Induction Effect Of High-Voltage Electric Field, So That The Powder Coating And The Object To Be Coated Are Induced And Charged With Opposite Charges Respectively, And The Powder Coating Is Adsorbed To The Object To Be Coated, And Then The Object To Be Coated Is Placed In A Baking Oven For Drying. Baked Leveling Film. Thermoplastic Powder Coatings Only Need To Be Melted And Leveled, While Thermosetting Powder Coatings Need To Be Cross-Linked And Cured To Form A Film After Leveling.     Advantages Of Electrostatic Powder Coating The Surface Of The Coated Object Can Be Sprayed Directly; It Is Suitable For The Coating Film With A Thickness Of 50-150 Μm, The Thickness Of The Coating Film Is Uniform, And It Is Not Easy To Sag; It Has Strong Adaptability To The Coated Object And Can Be Sprayed With Different Sizes And Shapes Of The Coated Object , Including The Inner And Outer Walls Of The Pipeline; Strong Adaptability To Various Powder Coatings, The Spilled Powder Coatings Can Be Recycled, And The Utilization Rate Of The Coatings Is High.  

2022

05/06

Various Steel Used In Refrigerator Components

1. Refrigerator Door   Parts Requirements: The Door Is Required To Have A Straight Appearance; It Has Suitable Hardness To Ensure That It Will Not Deform After Foaming. Material Requirements: The Appearance Is Straight; The Hardness Is Above HRB40. Recommended Materials: (1) Color-Coated Steel Sheet TDC51D+AZ 0.45-0.5mm. (2) Ordinary High-Strength Steel BJD300, 0.35-0.4mm, Yield Strength ≥ 300MPa. (3) Oil-Resistant Color-Coated Sheet TDC51D+Z, 0.4-0.5 Mm. (4) Antibacterial Color Coated Board TSECD/TDC52D+Z, 0.4-0.5mm. (4) Antibacterial Color Coated Board TSECD/TDC52D+Z, 0.4-0.5mm. 2. Back Panel   Parts Requirements: Good Corrosion Resistance, Good Heat Resistance, Heat Dissipation And Beautiful Appearance Surface Are Required. Material Requirements: Good Processing Properties. Recommended Materials: (1) Chrome-Free,AFP, Spangle Aluzinc Sheet DC51D+AZ, 0.28-0.35mm; (2) High-Strength, Chrome-Free, AFP, Spangle Aluzinc Sheet DC51D+AZ, 0.28-0.29mm.     3. U Panel   Parts Requirements: U Panel Requires Appropriate Rigidity For Easy Handling; Straight Appearance; Appropriate Hardness To Ensure No Deformation After Foaming. Material Requirements: The Appearance Is Straight; The Thickness Is Above 0.35mm And The Hardness Is HRB40. Recommended Materials: (1) Color-Coated Sheet TDC51D+AZ 0.45-0.5mm. (2) Ordinary High-Strength Steel BJD300, 0.35-0.4mm, Yield Strength ≥ 300MPa. (3) Oil-Resistant Color-Coated Sheet TDC51D+Z, 0.4-0.5 Mm. (4) Antibacterial Color Coated Board TSECD/TDC52D+Z, 0.4-0.5mm.     4. Bottom Plate   Parts Requirements: The Bottom Plate Requires No Fatigue Cracking Under Vibration Conditions, And Has Suitable Strength To Meet The Bearing Requirements. Material Requirements: Good Stamping Performance, Suitable Strength And Tensile Strength. Recommended Material: Hot-Dip Galvanized DC51D+Z, 1-1.2mm, Used After Spraying.       5. Hinges   Parts Requirements: The Hinge Must Have Appropriate Strength And Rigidity To Ensure That It Does Not Deform After Bearing. Material Requirements: Smooth Appearance, Yield Strength Above 200MPa. Recommended Material: (1) Normal Cold SPCC, 3mm, Used After Electroplating. (2) Hot-Dip Galvanized High-Strength Steel BJG-PX, 1-1.2mm, Tensile Strength> 380MPa.  

2022

03/26

Aluminum Hits Highest Since 2008 on LME, Closes In on a Record

Aluminum Surged To A 13-Year High In London As Booming Demand And A Swath Of Smelter Closures From China To Europe Bring The Risk Of Shortages Of The Crucial Industrial Metal.   Prices Rose As Much As 3.3% To $3,236 A Ton On The London Metal Exchange, Surpassing A Peak In October To Reach The Highest Since 2008. Aluminum Is The Best Performer On The LME This Year, And The Next Target For Bullish Investors Who’ve Been Drawn Into The Rapidly Tightening Market Is An All-Time High Above $3,380.   Key Raw Materials From Nickel To Crude Oil Have Surged In Recent Months As Consumption Has Risen Sharply With The World Emerging From The Pandemic While Supply Hasn’t Kept Up, Stoking Inflation Concerns. Goldman Sachs Group Inc. Raised Its 12-Month Target On Aluminum To A Record $4,000 A Ton, Citing Supply Disruptions Stemming From Power Rationing In China And Europe At A Time Of “Exceptional” Developed-Market Demand.   “Aluminum Markets Are Facing A Melt-Up In Prices This Year, Driven By Simultaneous Deficits In Both China And Ex-China Drawing On Already Low Stock Of Inventory,” Goldman Analysts Including Nicholas Snowdon And Jeffrey Currie Said In A Note.   The Global Aluminum Market Is In The Widest Backwardation Since 2018, And Prices Have Risen 13% In London This Year. With Smelters In Europe Battling An Energy Crisis And Chinese Supply At Risk From A Burgeoning Covid Outbreak, Buyers Are Drawing Rapidly From Stockpiles And Pushing Them To Critically Low Levels. “A Key Attribute Of Physical Scarcity Is That It Has A Propensity To Spread, Creating Additional Volatility In Prices Throughout The Economy,” The Goldman Analysts Said In The Emailed Note. The Bloomberg Commodity Spot Index, Which Tracks Energy, Metals And Crop Prices, Climbed To Its Highest Ever This Month, And Has More Than Doubled From A Four-Year Low Reached Early In The Pandemic. Aluminum Rose 1.6% To Settle At $3,183 A Ton At 5:53 P.M. On The LME. Other Main LME Metals Were Mixed, With Copper Little Changed And Nickel Falling. “It’s A Perfect Storm For Aluminum Right Now, With The European Energy Crisis And The Situation In China Still Restricting Supply,” Said Wenyu Yao, Senior Commodities Strategist At ING Bank. Some Investors Have Been Long Aluminum While Shorting Copper, According To Yao.  

2022

02/10

Metals Futures: London Aluminum Prices Fell Due To Omicron Concerns, But Low Inventories Eased The Decline

London Aluminum Prices Fell On Thursday, Taking A Hit Due To Concerns About The Potential Economic Impact Of The Omicron Coronavirus Variant, But Low Inventories Eased The Decline. As Of 0704 GMT, Three-Month Aluminum On The London Metal Exchange (LME) Fell 0.9% To US$2,640.50 Per Ton. The Main January Aluminum Futures Contract On The Shanghai Futures Exchange Closed Down 1.2% At RMB 18,765 (US$2,944.87) Per Ton. The Omicron Variant Found In South Africa Is Rapidly Becoming The Dominant Variant Of The New Coronavirus. The U.S. Detected A Case Of Omicron In The Country On Wednesday. The Virus Strain Has Been Found In More Than 20 Countries. However, As The LME Aluminum Inventory MALSTX-TOTAL Fell To 893,775 Tons, The Lowest Level Since September 2007, Down 55% From March, Aluminum Prices Were Supported. Exchange Data Shows That Most Aluminum Stocks Have Recently Left Warehouses In Malaysia. "The Decrease In LME Inventory Is Driven By Demand-Some Moved To China, Some Moved To The West. Demand In All Sectors Has Improved, Except Perhaps Only China's Real Estate Construction," Said An Aluminum Trader. The Premium Of LME Aluminum Spot Compared With Three-Month Aluminum MAL0-3 Rose To 16.30 US Dollars Per Ton, Indicating That The Supply Is Tight In The Near Future. The CEO Of Chilean National Copper Corporation (Codelco), The World's Largest Copper Producer, Predicts That Copper Prices Will Fall By 12% Within One Year, Because Supply Will Exceed Demand By 2024, And The Consumption Growth Of Electric Vehicles Will Match Output Echoes. Huayou Cobalt, A Chinese Manufacturer Of Lithium Battery Materials, Rose 4.7% In Early Trading On Wednesday, But The Rate Of Increase Has Declined. Previously, The Company Stated That It Signed A Cooperation Agreement With Dangsheng Technology To Supply 300,000 To 350,000 Tons Of Ternary Precursors In The Next Four Years. LME Copper Futures Fell 0.6% To US$9,392 Per Ton, Nickel Futures Fell 0.2% To US$19,905 Per Ton, And Lead Futures Fell 0.8% To US$2,284 Per Ton. Shanghai Copper Fell 1.2% To 68,650 Yuan Per Ton, And Shanghai Nickel Fell 1.1% To 147,390 Yuan Per Ton.

2021

12/04

Fashionable And Practical Shiny Aluminum

For Many People, Barbecue Is An Irresistible Charm. In The Leisure Time, With Good Friends Or Family Members, To Enjoy The Delicious Barbecue Brought By The Barbecue, I Believe That Life Will Become Very Pleasant. When Grilling, The Roasting Pan Is An Indispensable Thing. What Material Is The Bakeware Made Of! Nowadays, It Is Mostly Made Of Bright-Faced Aluminum Sheet. This Fashionable And Practical Material Brings A Lot Of Convenience To Our Lives. The Bakeware Must Be Made Of High Temperature Resistant Materials, Because The Temperature Is Relatively High When Grilling, And The Bakeware Made Of Bright Aluminum Oxide Does Not Have To Worry About Being Damaged Or Deformed. Case. Moreover, This Material Is Resistant To Acid, Alkali And Corrosion. Even If You Add Some Condiments To The Meat When Grilling, Such As Oil, Salt, Soy Sauce, Or Chili, Etc., You Don’t Have To Worry About The Roasting Pan Being Damaged. Corrosion Will Affect Normal Use. Judging From The Results Of The Experiment, The High Temperature Resistance Of Shiny Alumina Can Reach About 550 Degrees, So Even If It Is Used For A Long Time, It Is Safe To Use Under Overheating. In Addition To Being Used To Make Bakeware For Barbecues, Shiny Aluminum Is Also Used In Construction And Decoration. For Example, It Can Be Used In The Ceiling Of A House, And It Can Also Be Used In The Production Of Partitions. Various Furniture Panels Can Also Be Considered. The Brightness Is Relatively High, And It Is Extremely Bright And Metallic, Which Is More In Line With The Aesthetic Requirements Of Modern People.

2021

07/15

What raw materials caused the price of cars is getting more and more expensive?

According to foreign media reports, automobiles have become popular again due to the epidemic, and due to soaring commodity prices, automobile prices have become more and more expensive.   This year, as supply cannot keep up with demand, many basic materials (such as copper, steel, and aluminum) for automakers have reached or are about to reach their highest prices in history. Bloomberg Commodity Spot Index (Bloomberg Commodity Spot Index) jumped to its highest level since 2011, among which metal prices have risen 21% this year.   If the current rally develops into a super cycle, rising car prices may herald full inflation. JPMorgan Chase analysts estimate that in the past year ending in March this year, the prices of automotive raw materials have risen by 83%. And these parts usually account for about 10% of the cost of car manufacturing, which means that a $40,000 car must increase in price by 8.3% to offset the impact of the increase in raw material prices.   Last week, Ford CEO Jim Farley said: "We do feel the difficulties in the commodity market. Inflation has occurred in various areas of the industry, which we have never seen in years." It is worth noting that globally. Semiconductor shortages are also restricting production, leading to tight inventories and rising car prices. In the United States, the supply of cars is so restricted that car rental companies are seeking to buy used cars at auction instead of new ones.   The main driver of high car prices is the steel used in the chassis, engine and wheels. With the implementation of production restrictions in China, the largest steel producer, the price of steel has risen to the highest level in history. As the industry is undergoing energy transformation to meet more stringent emission standards, soaring copper prices have also increased the cost pressure on electric vehicles. According to consulting firm Wood Mackenzie Ltd, because of more internal wiring, the copper used in electric vehicles is nearly 3.5 times that of fuel vehicles.   The price increase of these materials may hit automakers such as Tesla and Volkswagen, who are striving to make electric vehicles more price-competitive than traditional models; this may also encourage automakers to explore alternative chemistry for electric vehicle batteries Material, most batteries use some combination of lithium, cobalt, and nickel, and the prices of these three materials have risen by at least 47% in the past 12 months. This month, companies such as Ford and BMW invested $130 million in battery start-up Solid Power, which is studying a battery that does not require the use of these metals, which can reduce the cost of battery packs by 10 times. Caspar Rawles, head of price and data evaluation at Benchmark Mineral Intelligence, a professional information provider, said: “They want to diversify this risk. There is no hedge against lithium and cobalt.”   On May 7, Nicolas Peter, BMW’s chief financial officer, said at the first quarter 2021 earnings conference that BMW expects this year’s commodity price hikes will cause losses of up to 1 billion euros (about 1.2 billion US dollars) in the next few months , Palladium, steel and rhodium will be particularly worrying metal materials. In the long run, BMW is working hard to reduce the impact of key raw material price increases. The company plans to start producing cars in 2025 under a new structure that will allow the recycling of materials such as steel, aluminum and plastics to produce new cars. BMW CEO Oliver Zipse said, "We are looking for partners" to perfect the necessary technology.   It is often difficult for automakers to pass on rising costs, but the positive side is that as major economies reopen, many consumers continue to avoid public transportation, and demand for cars begins to recover. Stellantis said the company needs to offset some of the rising costs, and the market can support this behavior so far. Morgan Stanley analysts also wrote in a report: “It’s hard to imagine a better environment than this that can free consumers from the impact of supply shocks and price increases. They are actually queuing up for transportation from cars. The company receives new cars. The car market is a seller’s market."    

2021

05/22

The most beautiful station-NIO House Hangzhou West Lake

Located on the bank of the beautiful West Lake in Hangzhou, China, the new NIO Center combines a new car display space and a membership club, integrating the essence of the NIO brand with the West Lake culture, allowing users to experience NIO’s multi-sensory in-depth experience of NIO’s tribute to nature Brand philosophy.   Hangzhou’s NIO House is a typical Jiangnan building, with plain exterior walls and gently sloping tile roofs. It is different from the green tiles and cornices in the Sijiu City, with slightly raised eaves. The charm of Jiangnan is in the plain, a little bit infiltrated. Come. The design of the façade perfectly integrates the image of the West Lake and the sky and water into the building, using the "sky" of the West Lake as the glass curtain wall, which is applied to the second and third floors. From the outside, the gallery area on the first floor and the pedestrians belong to the living space of the NIO user and his friends.   In the plain-gray-toned science and technology hall on the ground floor, mirror materials are used. Between each mirror surface, there are fragments of light, like a sparkling water surface. Layers of waves push forward and follow the waves. The direction Weilai show car will be greeted.   Immediately on the wooden stairs, the long living room public communication table became the highlight of the design, where friends can talk and drink, and work partners can brainstorm. It can be said that it is the most suitable venue for a gathering and feast.   If the second floor is a holy place for gatherings, then the third floor is a place of meditation. Weilai puts Library, Forum and Lab on this layer. Of course, it doesn't stop there. The patio design that penetrates the three-story building is what makes Hangzhou NIO House amazing. First of all, the ceiling of the patio here is all made of satin anodized aluminum, and the satin-like surface maximizes the connotation characteristics of Jiangnan architecture into the modern architecture. Secondly, the design of the patio on the third floor makes the entire space transparent, and the rectangular space no longer has a sense of restraint.   As the most beautiful NIO House, it is not just a piece of West Lake that is collected here, but the sound, color and flavor of Hangzhou are condensed under this azure blue. With a book in front of the window, you can enjoy the four seasons of West Lake, and the summer heat dissipates in time.    

2021

04/28

Blockage Of The Suez Canal Exacerbates The Shortage Of Aluminum Billets

        According To The Mining.Com Website Citing Bloomberg News, The Blockage Of The Suez Canal Has Further Exacerbated The Rare Shortage Of Aluminum Products For Transportation And Construction.    Due To The Soaring Production Of European Factories And The Replenishment Of Inventory By Industrial Users Before The Lifting Of The Epidemic Lockdown, The Supply Of Special Products Such As Aluminum Billet Was Quickly Tightened, Pushing The Benchmark Aluminum Price To The Highest Since Mid-2018.   Several Middle Eastern Suppliers, Including UAE Global Aluminum And Bahrain Aluminum Are All Professional Manufacturers In This Industry. Although There Is No Sign Of Any Aluminum Products Being Blocked By The Suez Canal, If The Situation Continues, Cargo Ships Heading To Europe Will Be At Risk. To Drag The "Ever Given" Off The Scene Will Have To Wait At Least Until Wednesday.   Short-Term Transportation Interruptions Are Generally Not A Problem For A Well-Supplied Aluminum Market, But The Competition For Aluminum Products In Europe Has Caused Consumers To Pay For Freight Soaring. Market Analysts Believe That The Suez Canal Crisis Will Make This Situation Worse.    "It's A Bit Crazy," Said Kamil Wlazly, Senior Metal Analyst At Wood Mackenzie In A Telephone Interview. "There Are Many Things That Are More Important Than The Suez Canal Being Blocked. This Is Just An Offshoot."    Similarly, American Aluminum Billet Buyers Are Also Facing Shortages.

2021

03/29

Steel price in market dated on 3 March 2021

Today's steel market prices have risen sharply across the board. According to the data monitored by the Steel House website: the mainstream quotation of tertiary rebar in 28 major domestic markets is 4,710 yuan, an increase of 85 yuan from the previous day; the mainstream quotation of medium and heavy plates is 4949 yuan, an increase of 79 yuan from the previous day; the mainstream quotation of hot-rolled coils is 4982 Yuan, up 116 yuan from the previous day; the mainstream quotation of cold-rolled coils was 5,686 yuan, up 72 yuan from the previous day.   Yesterday, Tangshan City issued the "March Air Pollution Comprehensive Management Tackling Month Plan". The document requires that Yanshan Iron and Steel, Tangshan Iron and Steel, Huaxi Iron and Steel, and Rongxin Iron and Steel be shut down before March 10, a total of 7 450 cubic meters of blast furnaces. Shut down all production equipment of Xinbaotai Iron & Steel. It is understood that among the 7 blast furnace equipment mentioned in the document, 4 blast furnaces have been stopped. Of the two coking companies, Hong Kong and Mainland coking have not shut down, involving 1 million tons of coking production capacity. In terms of total amount, the impact of supply and demand is limited, but the document mentions that Tangshan City will reduce overall emissions by 45% in March, which may significantly inhibit subsequent production.   The introduction of policies is good for the market. In addition, "carbon neutrality" is expected to heat up, and the source ensures that crude steel output is compressed, or supply reduction, which continues to boost market sentiment. Affected by this, Tangshan General Carbon billet continued to raise its quotations this morning, with a cumulative increase of 120 yuan in a single day. Demand continues to recover recently, merchant shipments have begun to improve, and the market transaction atmosphere is ideal. The national "two sessions" will be held soon, and we will continue to pay attention to the policies of the "two sessions" and the iron and steel industry policy.

2021

03/04

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