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ParkerBob
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
Industry info
Wiki
Q&A
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Q
how to bend pvc without kinking
BeverlyBennett
ParkerBob
Release Time:
July 13, 2024, 4:07 AM
Bending PVC pipe without causing it to kink requires applying gentle, consistent heat to make the plastic pliable while ensuring it bends evenly. One effective method is using a heat gun or a hairdryer. Heat the area where you want to bend the pipe, moving the heat source back and forth to avoid burning the PVC. Once the PVC is warm and flexible (but not too hot to touch), slowly bend it to the desired angle. Using a form or a mold that matches the desired bend radius can help maintain an even curve and prevent kinking. Sand filling is another method; fill the pipe with sand, cap the ends, and then heat. The sand inside prevents collapsing by distributing the pressure evenly throughout the bend. Both techniques require patience and practice to perfect the bend without kinking.
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Q
do engine oils have expiry date
CarterRoy
ParkerBob
Release Time:
July 2, 2024, 8:13 AM
Yes, engine oils do have an expiry date, typically ranging from 2 to 5 years from the date of manufacture. Despite being a stable, non-biodegradable product, engine oil can degrade over time due to exposure to heat, humidity, and air, which can lead to changes in viscosity or the loss of integral additives. It’s important to store engine oil in a cool, dry place to maximize its shelf life. While using slightly outdated oil may not immediately harm your engine, it’s advisable to adhere to the expiry date to ensure optimal engine performance and longevity. Manufacturers determine these dates through rigorous testing, ensuring the oil maintains its properties and efficacy within the specified period. Always check the packaging for the manufacture and expiry dates before use.
0
Q
is lye a base or acid
DuncanCarpenter
ParkerBob
Release Time:
June 25, 2024, 3:16 PM
Lye refers to a strong alkali, typically either sodium hydroxide (NaOH) or potassium hydroxide (KOH). It is decisively a base, not an acid. As a base, it tends to react with acids to form salts and water, a process known as neutralization. Lye has a high pH value, indicating its strong basic nature. It is commonly used in various applications such as soap making, as a cleaning agent, and in the food industry. However, due to its caustic properties, lye must be handled with extreme care to avoid chemical burns or other injuries. Its ability to break down organic material makes it highly effective but also potentially dangerous without proper safety precautions.
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Q
what is custom blow molding
AtwoodJoshua
ParkerBob
Release Time:
June 22, 2024, 11:15 AM
Custom blow molding is a manufacturing process used to create hollow plastic parts by inflating a heated plastic tube (parison) inside a mold until it takes the shape of the mold cavity. This method is tailored to produce unique shapes and sizes for various applications, allowing for flexibility in design and functionality. It is widely used in making containers, bottles, automotive parts, and toys. Custom blow molding offers significant advantages, such as the ability to produce complex shapes with uniform wall thickness, lower manufacturing costs for large volumes, and quick turnaround times. This customization aspect allows companies to meet specific requirements, offering a competitive edge by developing products that precisely fit their needs or those of their customers.
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Q
how to tell if yarn is superwash
GemmaZimmerman
ParkerBob
Release Time:
June 2, 2024, 12:17 AM
To determine if yarn is superwash, start by checking the label for “superwash” or similar terms indicating it’s machine washable. Superwash wool is chemically treated or coated to prevent felting, allowing for easy care. If the label is missing, you can perform a small test by washing a sample in warm water with agitation; non-superwash yarns will felt or shrink, while superwash yarns will maintain their form. However, use caution, as this test could ruin a non-superwash sample. It’s also worth noting that superwash yarns often have a smoother, silkier feel compared to traditional wool. Engaging with online yarn communities or contacting the manufacturer can also provide clarity.
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Q
where to pull yarn from
Einscan_SP_qtOt
ParkerBob
Release Time:
May 30, 2024, 1:48 PM
When choosing where to pull yarn from, you have two main options: from the outside or from the center of the skein or ball. Pulling from the outside is the most straightforward method and ensures that the yarn doesn’t tangle. However, it can cause the yarn to roll and twist as you work, which can be inconvenient. Pulling yarn from the center, also known as center-pull, is preferred by many because it keeps the skein stable and prevents it from rolling away. To find the end from the center, reach into the skein and gently pull out a small bundle of yarn; the end you need is usually in there. While center-pulling can occasionally lead to tangles inside the skein if not done carefully, it generally makes for a smoother knitting or crocheting experience. Your choice might depend on the yarn type and personal preference, as some yarns are easier to start from one end than the other.
0
Q
usage of polypropylene
AdelaJoule
ParkerBob
Release Time:
May 14, 2024, 10:47 AM
Polypropylene (PP) is a versatile, thermoplastic polymer known for its resistance to chemicals, elasticity, and toughness. Widely used in various industries, it serves in the manufacturing of packaging materials, automotive components, textiles, consumer goods, and medical equipment. In packaging, it’s favored for its ability to preserve the quality of food by preventing moisture entry, thus extending shelf life. The automotive sector utilizes PP for parts that demand durability and resistance to wear and tear, such as bumpers and dashboards. In textiles, PP is used for making durable fabrics, ropes, and carpets that are resistant to staining and fading. Furthermore, PP’s non-toxic nature makes it a suitable choice for medical syringes and containers, enhancing healthcare safety. Its recyclability also supports environmental sustainability efforts, making it a preferred material in eco-conscious applications.
0
Q
hot runner system injection molding supplier
AaronHughes
ParkerBob
Release Time:
May 14, 2024, 9:33 AM
When seeking a hot runner system injection molding supplier, consider factors such as the supplier’s expertise, product quality, after-sales service, and the technology they incorporate into their systems. Reputable suppliers, such as Husky Injection Molding Systems, Milacron, and YUDO, have established themselves as leaders in this space by consistently providing advanced, reliable hot runner solutions. These systems are critical in minimizing cycle time and reducing waste, ensuring more efficient and sustainable molding operations. It’s also essential to evaluate the compatibility of their systems with your specific molding requirements and the level of support they offer for system integration, maintenance, and troubleshooting. Selection should be based on a comprehensive assessment of your needs, the supplier’s technological capabilities, and the long-term value their solutions can offer to your production setup.
0
Q
difference between hdpe and polypropylene
XantheFrederick
ParkerBob
Release Time:
May 7, 2024, 6:39 AM
HDPE (High-Density Polyethylene) and Polypropylene (PP) are both plastics widely used in various applications due to their lightweight, resistance to chemicals, and durability. The main difference lies in their structure and properties. HDPE is known for its high strength-to-density ratio, making it ideal for high-stress applications such as water pipes and milk containers. Its linear structure gives it a higher tensile strength and temperature resistance compared to PP. On the other hand, Polypropylene is appreciated for its elasticity and fatigue resistance, qualities that make it perfect for use in living hinges, automotive components, and reusable containers. PP also has a lower density than HDPE, making it lighter and therefore advantageous for products where weight is a consideration. Furthermore, PP can be more easily copolymerized with other polymers, giving it a broader range of applications. In summary, the choice between HDPE and PP should be based on the specific requiremen...
0
Q
hdpe signification
LeopoldJean
ParkerBob
Release Time:
May 7, 2024, 3:56 AM
HDPE stands for High-Density Polyethylene, a versatile plastic with widespread use in various industries due to its strength, durability, and resistance to moisture and chemicals. It’s commonly found in products such as plastic bottles, piping, and plastic lumber, making it an essential material in packaging, construction, and consumer goods. HDPE is also favored for its recyclability, contributing to environmental sustainability efforts by reducing waste and promoting the reuse of materials.
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