Silicon Carbide Lined Pipe Has Super Wear Resistance, It Must Be Designed According To The Factors Of Leakage Prevention, Corrosion Prevention, Rain Prevention And Anti-Freezing. The Main Points Are Anti-Wear And Corrosion Protection, Sic Lined Pipe Wear-Resistant Elbow Is Especially Serious, And Has Long Been The Key Part Of Power Plant Maintenance.
To Meet The Above Situation, We Sum Up The Use Of Silicon Carbide Lined Pipe In Thermal Power Plants Over The Years, Draw On The Advanced Experience Of The Same Industry In The World, And Focus On The Comprehensive Consideration Of Pipeline Wear Resistance, High Temperature Resistance And Anticorrosion Performance, And From The Convenience Of Construction, Low Manufacturing Cost And Relatively Simple Manufacturing Process, Design Several Mainstream Wear-Resistant Silicon Carbide Lined Pipe, For Use Units.
Solution: Lining Wear-Resistant Silicon Carbide Patch Composite Type, Lining Silicon Carbide Type, Lining Ring Silicon Carbide Composite Type.
Enforcement Standard: Dl/T680-1999. Of Technical Conditions For Wear-Resistant Pipelines
Silicon Carbide Patch
Silicon Carbide Patch Type Is Based On Two Patents "Silicon Carbide Patch Wear Resistant Fittings "(Patent Number: Zl 01) 265620.8) And Energy Storage Welding Silicon Carbide Patch Wear-Resistant Pipe Fittings (Patent No. Zl 03) 257897.0)
Performance Characteristics: In Recent Years, In The Comparison Of The Performance Of Many Similar Products, The Wear Resistance Of Powder Feeding Pipes Silicon Carbide Patch Wear-Resistant Elbows Has Been In The First Place, And We Have Successfully Solved The Problem Of Porcelain Chip Shedding, Complex Parts Of The Silicon Carbide Composite Pipe And High Temperature Resistance, Making The Silicon Carbide Composite Pipe Tc-G Products Made By Paste Method The Best Wear-Resistant Pipe For Powder Feeding System.
I. Anti-Shedding Design
1.Silicon Carbide Film.
Anti-Wear Silicon Carbide Sheet Structure Type Is "Three-Sided Pressure, Three-Sided Back Pressure, Positive And Negative Radians ", Porcelain And Porcelain Pieces And Porcelain Pieces Are Inlaid And Connected, With The Overall And Local Anti-Stripping Performance.
2. Media Layer.
Between The Porcelain Sheet And The Steel Body, The Inorganic Adhesive Agent With High Temperature Resistance, High Strength And Low Expansion Coefficient Is Used As The Binding Media Layer Between The Steel Body And The Silicon Carbide Sheet, And The Long-Term Operation In The High Temperature Dry Powder Pipeline Can Still Maintain Good Bond Performance Without Delamination.
3. Welding Fixing Process.
Process 1: Directly Use The Heat-Resistant Steel Bowl To Weld The Silicon Carbide Piece With The Buckle Cone Hole Directly On The Steel Body, Then With The Buckle Silicon Carbide Plugging Glue After Packaging On The Conical Hole Of The Silicon Carbide Piece, The Overall Appearance Is All Silicon Carbide Sides.
Craft 2: Adopt Energy Storage Welding Process To Weld Silicon Carbide Piece With Conical Hole To Steel Body Through Special Wear-Resistant Bolt.
Ii. Structural Forms
Structure 1:(Carbon Steel)+ Inorganic Adhesive +Silicon Carbide Patch + Welded Steel Bowl With Buckle Porcelain Plug
Structure 2:(Carbon Steel)+ Inorganic Adhesive +Silicon Carbide Patch + Welding Bolt And Conical Nut
Iii. Technical Performance
1. Wear Resistant Silicon Carbide Sheet (Type 95 Alumina Wear Resistant Silicon Carbide [1])
Basic Features: High Density, High Hardness, High Wear Resistance, Performance Second Only To Diamond.
Technical Parameters :1760℃ Sintered At High Temperature; The Content Of Al2O3 Detected By The State Authority Testing Department Is 95.02%; Rockwell Hardness ≥86(Hra); Tensile Strength ≥550 Mpa; Density 3.8; Flexural Strength ≥370; High Temperature Resistance :1760℃.
2. Bonding Media Layer (Iv Type Inorganic Adhesive)
Basic Characteristics: High Adhesion, High Waterproof, High Temperature Resistance, Based On Domestic High-Tech Research Results.
Technical Parameters: The State Authority Inspection Department Detects The Tensile Strength Of The Adhesive Surface ≥24.2 Mpa;260℃. The Tensile Strength ≥18 Mpa; The Shear Strength Of The Adhesive Surface Is 7.08. The Temperature Resistance :-35~1250℃.
3. Welded Steel Bowls And Bolts (Weldable Antiwear And Heat Resistant Steel)
Basic Features: Anti-Wear, High Welding Strength, High Temperature Resistance, Good Thermal Stability.
Technical Parameters: Weld Surface Tensile Strength ≥199 Mpa; Weld Surface Shear Strength ≥32.2, High Temperature Resistance :1450℃.
Silicon Carbide Liner
I. Structural Characteristics:
Outer Layer Is Ordinary Carbon Steel Bend Pipe, Inner Layer Is Complex Phase Silicon Carbide, Lining Silicon Carbide Adopts Eccentric Structure, Wear Serious Outer Arc Thickening, Inner Arc Thinning, Silicon Carbide Outer Side Is Wrapped With Glass Fiber Reinforced Plastic To Increase The Overall Strength Level Of Wear-Resistant Bend Pipe. Silicon Carbide Wear-Resistant Bend Pipe Needs To Be Made Into Shrimp Waist Bend.
Ii. Scope Of Application:
Dust, Material Blocks And Residues Working In The Environment Below 500℃ And Within 1.6 Mpa For Abrasive Wear Occasions, Such As Thermal Power Generation, Coal, Metallurgy, Mining And Other Industries Of Particulate Material Transport Pipeline.
Iii. Technical Parameters:
Sic Material Code:
Compressive Strength (Mpa):550
Bending (Mpa):370
Bulk Density (g/Cm):2.75
Inner Wall Hardness (Morse): Grade 9
Iv. Performance Characteristics:
Good Wear Resistance Of 1. And Long Service Life. Complex Phase Silicon Carbide Wear Resistance Of Abrasive Particles Is Better Than Traditional Cast Stone Products.
2. Installation Is Convenient, The Connection Way Is Flexible And Diverse. Can Be Used Welding, Flange Or Flexible Pipe Joints And Other Ways Of Connection.
3. Eccentric Structure, Effective Cost Savings: The Pipe Lining Complex Silicon Carbide Adopt Eccentric Structure, Without Increasing The Cost, Further Improve The Overall Service Life Of The Bend.
4. Impact Resistance: The Composite Silicon Carbide And Steel Pipe Are Filled With Glass Fiber Reinforced Plastic, Which Has Excellent Impact Resistance To External Force.
The 5. Performance Is Reliable: The Silicon Carbide Is Lined In The Form Of Integral Straight Pipe And Shrimp Waist Variable Diameter Inside The Steel Pipe, There Is No Longitudinal Joint, And The Lining Material Will Not Fall Off.
