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  • Effect of Casting Defect on Mechanical Properties of .

    In this study, specimens with internal casting defects, made from 17-4PH stainless steel, were prepared and evaluated and characterized based on the volume fraction of defects. The relation between mechanical properties such as tensile, low cycle fatigue and fracture toughness and volume fraction of defect has been investigated.

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  • Stainless Steel Casting: The Complete Guide - KDM Steel

    Controlling Stainless Steel Defects during Casting. Almost all technical procedures involving both human and machines input have got some degree of errors. The errors may be adverse but, in some cases, they might just be little enough. Unfortunately, the casting process isn't spared. Don't worry.

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  • martensitic stainless steel casting defects

    May 28, 2018· Martensitic Stainless Steel Casting. Martensitic stainless steel casting were the first stainless steel casting type that were commercially developed and have a relatively high carbon content (0.1 – 1.2%) compared to other stainless steel casting types. Martensitic stainless steel casting contains chromium between 12 and 18%.

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  • Quality prediction in continuous casting of stainless ...

    2009-8-26 · Quality prediction in continuous casting of stainless steel slabs by F.R. Camisani-Calzolari*, I.K. Craig*, and P.C. Pistorius† Synopsis Surface defects on continuously cast slabs require treatment by grinding. This extra phase in the process causes lower throughput of final product and extra energy costs. The elimination of slab

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  • How to Prevent Shrinkage defect in Stainless Steel ...

    2019-6-12 · There may exist several defects in stainless steel investment casting process and shrinkage is the biggest problem that may occur during the production of casting in stainless steel. After the shell is cleaned in the early stage of the casting, the obvious shrinkage can be seen, and the slight shrinkage is only found after pickling & passivation (at first, the color is green and then yellow ...

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  • Casting Defects - Sand Mold, Metal Casting

    2020-12-31 · Actually, large flash is a casting problem, the foundry should improve it by modifying the patterns, but small fins and burrs are not casting defects, foundries just need to grind and remove them. Flash, Fin and Burr 7.

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  • Causes of pitting defects in castings

    2019-12-5 · The pits are also called pits, pits, and oxidized pits, which are one of the common surface defects of stainless steel investment castings. Generally, such defects cannot be repaired but can only be scrapped. Not only increased production costs, but also affected normal production schedule and .

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  • Casting Defects - Sand Mold, Metal Casting

    2020-12-31 · Casting Defects - Sand Mold, Metal Casting. Introducing various metal casting defects with many pictures by Dandong Foundry in China. These are the common sand casting defects on the surface and inside of cast iron and cast steel parts. 1. Blowhole and Pinhole This is a kind of cavities defect, which is also divided into pinhole and subsurface blowhole.

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  • Defects of Stainless steel parts during CNC machining ...

    2020-12-18 · While manufacturing stainless part by CNC machining process, there may occur lost of defects. Here we listed some of them, Dust Usually the machining workshop is not dust-free plant, so dust exist in the environment, it falls down on the facilities and stainless steel workpiece. Works normally use water or alkaline

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  • STEEL CASTINGS HANDBOOK

    2018-6-4 · In a thin section close to the gate, which delivers the hot metal, the mold will fill readily. At a distance from the gate, the metal may be too cold to fill the same thin section. A minimum thickness of 0.25" (6 mm) is suggested for design use when conventional steel casting techniques are employed.

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  • Shrinkage porosity of casting defects - China piping ...

    2020-11-20 · Shrinkage porosity refers to that the final solidification area of the casting is not fed by liquid metal or alloy to form dispersed and small shrinkage cavity. Often scattered in casting The axis area of wall thickness, the thick part, the root of riser and the vicinity of inner gate. When the volume of shrinkage porosity and shrinkage cavity ...

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  • Stainless steel lost wax castings, now save up to 50% .

    Features: Complicated structure, Easy to have casting defects such as iron beans during the casting process. Material: Stainless steel 304. Dimension: 100 x 85 x 55 mm. Weight: 370 Gram. Original Mold cost: USD 600.00(1 cavity) 50% Mold cost: USD 300.00

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  • Quality prediction in continuous casting of stainless ...

    2009-8-26 · The continuous casting of steel slabs is an established technology to solidify molten steel. Surface defects form during the continuous casting process. As a consequence of these defects, an intermediate grinding stage between casting and hot-rolling is needed to remove these defects. This causes large delays before slabs can be rolled, implying reduced

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  • Defects Introduced into Metals During Fabrication and .

    2020-8-25 · Casting Defects 2.1.1. Pipe and Shrinkage When molten metal is poured into an ingot mold it cools, starts to solidify and contracts. The outer surfaces solidify first and become fixed, while the center remains molten and, as it in turn cools and contracts, a depression is formed in the top. If .

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  • Casting Defects - Sand Mold, Metal Casting

    2020-12-31 · Casting Defects - Sand Mold, Metal Casting. Introducing various metal casting defects with many pictures by Dandong Foundry in China. These are the common sand casting defects on the surface and inside of cast iron and cast steel parts. 1. Blowhole and Pinhole This is a kind of cavities defect, which is also divided into pinhole and subsurface blowhole.

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  • (PDF) Preventing shrinkage defects in investment .

    Preventing shrinkage defects in investment casting of SUS310 stainless steel feather keys

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  • Analysis of common surface defects of hot rolled steel ...

    2020-8-11 · Hot-rolled steel sheets and strip products are one of the important steel products. With the application and development of hot-rolled sheets in all aspects, users' requirements for products are becoming more and more stringent. While users pay more attention to the quality of steel plates, they also pay more attention to the appearance quality of products. To a large extent, the appearance ...

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  • REDUCTION OF SURFACE DEFECTS AND OPTIMIZATION .

    2018-12-5 · Key Words: Steel, Continuous Casting, Surface Defects, Casting Parameters, Modelling and Optimization, Genetic Programming 1. INTRODUCTION In the steelmaking industry, continuous casting is the most used process for solidifying steel melt of defined chemical composition into cast semi-products (e.g. billets, blooms, slabs) [1].

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  • Preventing Investment Casting Defects | KI Castings

    Preventing Investment Casting Defects Investment casting dates back to the late 1800's, but not all investment cast parts are created equal. Investment casting is a pillar in industrial part manufacturing, known for producing high-volumes of parts that require a near-net shape, an even surface finish, and dimensional accuracy.

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  • Biggest defects of Investment Casting | Crack

    The biggest defects of Investment Casting Among all casting defects, The biggest defects of Investment Casting on product quality is casting cracks. According to its characteristics, it can be divided into hot cracks and cold cracks. The defects are not allowed to exist in producing. (1) Hot crack

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  • Shrinkage and Gas Defects | Stainless Foundry & .

    This rate of solidification will affect casting soundness and in turn, shrinkage within the casting. Examples of Shrinkage. Shrinkage defects internal and on a machined surface . Success Story: Eliminating Shrinkage. SF&E has poured over 50,000 castings of a particular stainless steel .

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  • REDUCTION OF SURFACE DEFECTS AND OPTIMIZATION .

    2018-12-5 · Key Words: Steel, Continuous Casting, Surface Defects, Casting Parameters, Modelling and Optimization, Genetic Programming 1. INTRODUCTION In the steelmaking industry, continuous casting is the most used process for solidifying steel melt of defined chemical composition into cast semi-products (e.g. billets, blooms, slabs) [1].

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  • Defects in Stainless Steel | Rolling (Metalworking) | .

    2020-7-21 · DEFECTS IN STAINLESS STEEL. A Metallurgical Perspective. CHANDRA P. AGRAWAL. R&D Topics to Be Covered. 1. 1.What Whatis is the thedefect? defect? 2. 2. Defects Defectscoming coming in instainless stainlesssteel steel. 3. 3.Metallurgical Metallurgicaldefects defects 4. 4. SEM SEMStudy Studyof ofmetallurgical metallurgical defects defects. 5. 5. Summary Summary What is the .

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  • How to Prevent Shrinkage defect in Stainless Steel ...

    2019-6-12 · There may exist several defects in stainless steel investment casting process and shrinkage is the biggest problem that may occur during the production of casting in stainless steel. After the shell is cleaned in the early stage of the casting, the obvious shrinkage can be seen, and the slight shrinkage is only found after pickling & passivation (at first, the color is green and then yellow ...

  • Get Price
  • Electromagnetic Effects on Solidification Defect .

    2020-9-3 · Continuous casting is the most widely used process to manufacture steel, accounting for > 96% of steel in the world.1 Thus, even small improvements to this process can greatly impact the industry. During continuous casting, molten steel flows into the mold cavity through a submerged nozzle and freezes against the water-cooled mold plates in the presence of turbulent fluid flow, argon gas ...

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  • martensitic stainless steel casting defects

    Martensitic stainless steel casting were the first stainless steel casting type that were commercially developed and have a relatively high carbon content (0.1 – 1.2%) compared to other stainless steel casting types. Martensitic stainless steel casting contains chromium between 12 and 18%. Gas Porosity Defects in Duplex Stainless Steel Castings ...

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  • Shrinkage porosity of casting defects - China piping ...

    2020-11-20 · Shrinkage porosity refers to that the final solidification area of the casting is not fed by liquid metal or alloy to form dispersed and small shrinkage cavity. Often scattered in casting The axis area of wall thickness, the thick part, the root of riser and the vicinity of inner gate. When the volume of shrinkage porosity and shrinkage cavity ...

  • Get Price
  • Defects Introduced into Metals During Fabrication and .

    2020-8-25 · Casting Defects 2.1.1. Pipe and Shrinkage When molten metal is poured into an ingot mold it cools, starts to solidify and contracts. The outer surfaces solidify first and become fixed, while the center remains molten and, as it in turn cools and contracts, a depression is formed in the top. If .

  • Get Price
  • Metallurgical Processes and Defects in Steel Products ...

    2016-10-10 · Defects in continuous cast steel products. Defects of the continuous cast steel products are formed due to several factors which include material related factors, casting speeds and temperatures, mould oscillation, casting powder, segregation coefficient of solute elements, phase transformation, and mechanical and thermal stresses.

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  • Preventing Casting Defects of Stainless Steel Flanges ...

    High-precision flanges are used in conjunction with O-rings, bolts, and nuts in a variety of pipe connections to prevent the leakage of harmful fluids. Flanges require good hermeticity; i.e., without pores, cavities, blow holes, or other shrinkage defects. This study employed mold flow analysis to predict where and how defects are likely to occur during the casting process.

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