casting defect ppm

High Technology Visual Inspection for Casting and …

 · When I worked as a powertrain SQE for one of the (former) Big Three about 10 years ago, we considered 2,500 PPM a good performance and less than 1000 PPM excellent for raw castings. The acceptable level went down to 250 PPM for machined …

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PPM Goals – iSixSigma

 · About casting, yes, a lot of improvement can be done. When I was working in that factory we dramatically reduced the defect rate after turning. But for when I left the rate was still in the low % rather than in the low PPM, and far from defect free.

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Casting defects

In general, a casting defect is defined as an observable and unplanned variation of a specification. The identity of a particular casting defect is based upon the specific shape, appearance, location and dimension or profile of the anomaly. The proper identification of a specific defect is the prerequisite to correcting and controlling the ...

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DEFECT FORMATION OF GRAY IRON CASTING

11 · of hydrogen in gray iron8,9 is approximately 8 ppm in liquid state and drops to 4 ppm during solidification. The solubility levels of nitrogen are reported below 150 ppm,9,10,11 but po-rosity defect formation has been reported when the nitrogen content is 110 – 150 ppm.12,13 Gas Concentration in Gray Cast Iron Melted in Cupola And Induction ...

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PPM, is it possible in a die casting plant?

24 · By: Bob McClintic, Die Casting Consultant "PPM" stands for "parts per million". It has become a commonly used method for measuring quality performance on anything from castings to successful take off and landings by airlines. Definition: One PPM means one (defect …

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What is PPM and How do I calculate it?

24 · Definition: One PPM means one (defect or event) in a million or 1/1,000,000. There was a time when you were considered a pretty good supplier when your defect rate was less than 1%, (10,000 PPM), then the expectation was increased to 0.1% or 1,000 PPM. Now the rate for most automotive components is targeted at 25 PPM or 0.0025%

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Porosity Defects in Iron Other methods for eliminating ...

23 · identical casting results compared to the 1974 research. Binder ratios of polyol resin to polyisocyanate component less than one (favoring higher levels of the polyisocyanate component) tended to increase overall porosity susceptibility. Balanced or ratios greater than one were, in general, not susceptible to defect formation. Defect forma-

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Casing defects

Casing defects 1. ... Dept of Mat Eng 8 In general, a casting defect is defined as an observable and unplanned variation of a specification. The identity of a particular casting defect is based upon the specific shape, appearance, location and dimension or profile of the irregularity. The proper identification of a specific defect is the ...

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6SIGMA_PPM_()__

18 · 6 SIGMA 6 SIGMA----FORD EX-MANIFOLD CASTING DEFECT USA Ford 4.6L & 3.8L EXHAUST MANIFOLD CASTING DEFECT FALL ...

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Are PPM Metrics Still Useful When Evaluating …

Are PPM Metrics Still Useful When Evaluating Suppliers? If you work in the automotive industry, you understand how much attention has been paid to supplier quality in recent times. There are many well-established methods for evaluating your company’s supply chain, but are PPM (parts per million) metrics still useful when evaluating suppliers?

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Calculation of the ppm complaint rate for production …

26 · Calculation of the ppm complaint rate for production material Version dated: 06/2017 Page 1 of 3 The ppm complaint rate is calculated by taking all deliveries (incl. initial samples) into account.

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What is PPM and How do I calculate it?

24 · Definition: One PPM means one (defect or event) in a million or 1/1,000,000. There was a time when you were considered a pretty good supplier when your defect rate was less than 1%, (10,000 PPM), then the expectation was increased to 0.1% or 1,000 PPM. Now the rate for most automotive components is targeted at 25 PPM or 0.0025%

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An Overview of Forging Processes with Their Defects

31 · International Journal of Scientific and Research Publications, Volume 4, Issue 6, June 2014 1 ISSN 3153 www.ijsrp.org An Overview of Forging Processes with Their Defects

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PPT – Casting defects are often very difficult to ...

Casting defects are often very difficult to characterize due to the intrinsic complexity of the casting process. All defects will fall into one or more of the ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 4674f NjU5O

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What is a typical ppm performance level for casting …

 · I would like to find out a typical external ppm performance level for casting suppliers. I used to work within automotive and had a good feeling for acceptable levels of performance from all suppliers.

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INCLUSIONS IN CONTINUOUS CASTING OF STEEL

16 ·  6ppm has extended bearing life by almost 30 times in comparison with steels with 20 ppm oxygen. To avoid these problems, the size and frequency of detrimental inclusions must be carefully controlled. Especially there should be no inclusions in the casting above a critical size. Table I …

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Casting defects

1. Casting Defects 1. Casting defects are often very difficult to characterize due to the intrinsic complexity of the casting process. 2. All defects will fall into one or more of the established categories of casting defects. 3. The proper identification of a particular defect is …

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Eliminating Zinc Die Casting Defects – Global Casting …

This is a casting defect issue and affects die maintenance and, in the longer term, die life. In short, vertical faces formed in the line of draw cannot be adjusted for wear. When wear occurs it will allow flash to develop at the part line which cannot be removed by clipping, necessitating expensive, time consuming second operation work.

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A Review of Common Metallurgical Defects in Ductile …

10 · A Review of Common Metallurgical Defects in Ductile Cast Iron Causes and Cures C.M.Ecob Customer Services Manager, Elkem AS, Foundry Products Division ... graphite with the addition that the defect is also found in thinner casting sections and is not as ... A Review of Common Metallurgical Defects in Ductile Cast Iron ...

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Casting defects

In general, a casting defect is defined as an observable and unplanned variation of a specification. The identity of a particular casting defect is based upon the specific shape, appearance, location and dimension or profile of the anomaly. The proper identification of a specific defect is the prerequisite to correcting and controlling the ...

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Pinholes

10 · Incidence of the defect Pinholes can appear individually or over an area. All areas of the casting can be affected. However, pinholes are more common in areas of the casting located away from the gate. Hydrogen and hydrogen-nitrogen pinholes occur in both grey and SG iron castings. Pinholes due to CO-slag reaction only occur in grey iron castings.

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Casting Defects.ppt | Casting (Metalworking) | …

In general, a casting defect is defined as an observable and unplanned variation of a specification. The identity of a particular casting defect is based upon the specific shape, appearance, location and dimension or profile of the anomaly. The proper identification of a specific defect is the prerequisite to correcting and controlling the ...

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Presentation Casting Defect | Casting (Metalworking ...

In general, a casting defect is defined as an observable and unplanned variation of a specification. The identity of a particular casting defect is based upon the specific shape, appearance, location and dimension or profile of the anomaly.

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INCLUSIONS IN CONTINUOUS CASTING OF STEEL

16 ·  6ppm has extended bearing life by almost 30 times in comparison with steels with 20 ppm oxygen. To avoid these problems, the size and frequency of detrimental inclusions must be carefully controlled. Especially there should be no inclusions in the casting above a critical size. Table I …

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Food Defect Levels Handbook | FDA

7 · PRODUCTS WITHOUT DEFECT LEVELS. If there is no defect action level for a product, or when findings show levels or types of defects that do not appear to fit the action level criteria, FDA ...

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PREDICTION OF MAXIMUM CASTING DEFECT SIZE IN …

9 · M. Šmíd et al.: Prediction of maximum casting defect size in MAR-M 247 alloy processed by hot isostatic pressing Materials Engineering - Materiálové inžinierstvo 22 (2015) 32 25 This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

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PPM (Parts Per Million) -Defective Rate

29 · PPM (Parts per million) is a measurement used by many customers to measure quality performance. Definition: One PPM means one (defect or event) in a million or 1/1,000,000. In the past a good supplier would have a defect rate of less than 1%, (10,000 PPM). ...

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6SIGMA_PPM_()PPT_word ...

6 · 6 SIGMA 6 SIGMA----FORD EX-MANIFOLD CASTING DEFECT USA Ford 4.6L & 3.8L EXHAUST MANIFOLD CASTING DEFECT FALL ...

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Analysis of Casting Defects in Foundry by Computerised ...

23 · Hot tear is a defect that occurs during solidification of a casting. Though steel is poured at high temperature, this temperature is low relative to high freezing temperature range for steel. The result of this is that steel starts freezing soon after being poured, often before the moulds and cores have been heated to the point where they have

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world of metallurgy: Controlling cast iron gas defects

17 · Described as an endogenous (internally generated) gas defect, it is usually a blowhole from a reaction with slag carried into the mold. These reaction voids may be located throughout a section of a casting but are normally near the cope surface. They may be large, small or …

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