Category Archives: Diecasting Process

Draft Angles in Die Castings

Kinetic Die Casting Company discusses “Draft Angle in Die Castings” – “what is draft angle in an aluminum metal box casting?” or “why do I need a draft angle on my aluminum die casting box part?” The mechanical reply is, all aluminum die castings need a draft angle on the walls of die cast box parts perpendicular to the parting plane or parallel to the slide interfaces. Because I have been selling die cast parts for over 20 years, I find easy answers and give simple calculations for my clients. What does that have to do with the usual engineer (any engineer other than in tooling or mechanical) or professional buyer?

Most people do not have the need to worry about how things are made; only what is made, and will it be what is essential. “Have you ever observed on a cupcake the bottom diameter is smaller than the top diameter?” or “Have you noted that a cake pan has sides that slope in toward the middle of the pan?” That would be an extreme case of a draft angle. Aluminum die castings would stick inside the die casting tool, molds, or die casting die if there was not enough draft angle in the tool and part. The usual draft angle for an aluminum die casting part is two degrees per side. The calculation for that is easy if a anyone is acquainted with die casting production part design.

Imagine an enclosure (or Aluminum Box) lying on a counter with the open side up. The aluminum box is 2″ deep inside with the height and width 4″ each way on outside. The walls of the box are 0.10″ in width. Due to the wall’s thickness, a few things are obvious to a part designer regarding this seemingly simple box:

  • The general height of the box is 2.10″ tall.
  • The inside of the box at the top of the opening is 3.80″ x 3.80″.
    A 2 degree draft angle will alter the dimensions in the following on the interior and exterior and should be regarded if something needs to fit inside the box or outside the box:

  • The top inside dimension of the box will be 3.80″ and the bottom inside will be 3.664″
  • The top outside dimension of the box will be 4.00″ and the bottom outside will be 3.864″
    If the box was intended for the interior of 4″ x 4″ at the bottom: box:

  • The top inside box dimension needs to be 4.136″
  • The outside top box dimension will be 4.336″.

    See our die casting draft webpage: http://www.kineticdiecasting.com/draft.html

    Contact Kinetic Die Casting Company at 800-524-8083 for more information


    Kinetic Die Casting Company Videos :

    http://www.youtube.com/user/kineticdc


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    March 1 A360 Metal Flow Video

    Auto Parts Manufactured as Die Castings in A360 Aluminum Die Casting Alloy.

    The Metal Flow Video from Kinetic Die Casting Company


    Published on Mar 1, 2013 on:
    http://www.youtube.com/watch?v=P2hJylJ8Qrc

    Kinetic Die Casting Company, 818-982-9200. A die casting Metal Flow Video into a four cavity die casting mold making four die casting automotive parts. Molten metal, A360 Aluminum alloy is injecting into the die casting mold. This video is a simulation of checking for die casting part surface defects and the metal temperature of the metal flow. Die Casting A360 Aluminum Alloy Metal Flow Video into an a360 aluminum auto part.

    Kinetic Die Casting Videos
    (http://www.youtube.com/user/kineticdc)

    Contact us by calling us at 818-982-9200 and ask for sales or email us at sales@kineticdc.com. Visit our website at www.kineticdiecasting.com

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    Doug Taylor of Delmar Die Casting Remembered

    Doug Taylor passed away January 11, 2013. I will miss Doug Taylor. I have known Doug Taylor since April 2005, when he invited me to the Governor’s Ball at the NADCA annual event in St. Louis, Mo. Even knowing my die casting company was much smaller than his, he always treated me with respect. I never understood why, but he seemed to like me even if we were competitors. We talked many times and had lunch many times. Once during lunch, he asked that I sell my tiny die casting company and go to work for him as his president. He offered me a lot of money and a car. We laughed when I explained that I am unemployable.

    In September 2008, Doug called me to visit him for lunch and he offered to sell me Del Mar Die Casting Company. He offered the zinc die casting business and the magnesium die casting business from Del Mar Industries. We met together over the next few months to see how we could make it work out. During the due diligence I got to meet his team and his family. Everyone at Delmar was excellent, just like Doug. Doug was very patient with me and my team. We came very close to closing the sale but we could not get the deal closed. Doug continued to be friendly afterwards. He was a gentleman in every sense of the word.

    – Bob Thomas, President
    Kinetic Die Casting, Inc.

    This excerpt is from NADCA:
    Longtime NADCA member Doug Taylor passed away on January 11, 2013. Doug was a tremendous NADCA member and supporter. He always said that he found the warmest and most generous people in the die casting industry, and he had never met such great friends.

    Doug joined the team at Del Mar Die Casting in 1981 and became president and CEO in January of 1986. Under Doug’s leadership, Del Mar Die Casting acquired Gardena Planting and Los Angeles Die Casting, becoming Del Mar Industries. Doug received the Austin T. Lillegren Award in 2010, which is presented in recognition of loyal and extraordinary services to the association and the die casting industry.

    A strong supporter of NADCA, Doug attended every Executive Conference from 1989-2010, and every NADCA Government Affairs Briefing from 1987-2010 until his retirement in 2010. During his terms on NADCA’s Board, he only missed one meeting out of 52. Doug joined the Board in 1992 as one of the original 28 Board members of the newly formed NADCA, serving a total of 13 years on the Board.

    The service for Doug Taylor will be held at 11:00 AM on Friday, January 25th at the following address:

    Westwood United Methodist Church
    10497 Wilshire Blvd.
    Los Angeles, CA 90024

    Doug and all of his great stories will be missed.

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    Why Use Die Casting?

    Sadly, die-casting is unknown to most of the people around the world. They are not even interested about how their lighting fixtures, appliances and car parts were created. But for the few of you who took their time to search for this page, kudos to you.

    Experts in the industry know for a fact that die casting is a very neat and useful technology that is used on creating metal parts and products. Fundamentally, it is not only used in the metal production industry, it is the same technique used in creating plastic products and materials. The only differences are the materials used in the production, and the materials used in the mold.

    To refresh your memory (and for those who do not know), here are the following advantages on using die-casting.

    • Fast production rates of products.
    • Large part quantities produced quickly.
    • Fewer added machine operations (compared to other manufacturing methods).
    • Lesser manual labor from any personnel involved.
    • Inserts, such as high strength bearing surfaces, heating elements, and threaded inserts, can be cast-in.




    If you compare it to sand casting and permanent molds, production with it is faster with lesser labor costs. Compared to permanent and sand mold castings, thinner walls can be produced by manufacturing with die casting. Completed products have very smooth cast surfaces. The products die casted have great dimensional accuracy and constancy. If you compare it with forging, it can produce products that are more complex. Alternatively, if you compare it to stamping, section thickness is not an issue with this casting method. If you compare this method and plastic casting, die casting can produce can create stronger high quality products.

    As you can see, die casting is definitely a good choice if a person wants to use a metal part in his product. Die casting is the best choice for high quality manufactured metal products. Kinetic Die Casting Company is your best choice for purchasing your die casting products. Call us at 818-982-9200 or email at sales@kineticdc.com

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    Kinetic Die Casting Company Production Parts Limitations

    KDC Limitations. Kinetic Die Casting Company Production Parts Limitations.

    Kinetic Die Casting Company has some limitations on the size, materials and quantities of production parts we will manufacture.

    SIZE: Diecasting Part Weights and Sizes
    Part sizes from .001 pounds to 10 pounds.
    Part sizes range from .025″ x .025″ (smallest).
    Part sizes up to 15″ to 17″ (largest)
    Surface area up to about 200 square inches.

    READ MORE:
    KineticDC Size Limitations http://www.kineticdiecasting.com/capabilities.html

    MATERIALS: Diecasting Materials or Alloys
    380 Aluminum Diecasting Alloy.
    383 Aluminum Diecasting Alloy.
    360 Aluminum Diecasting Alloy.
    413 Aluminum Diecasting Alloy.
    #3 Zinc (Zamak 3) Die Casting Alloy.

    READ MORE: KineticDC Die Casting Alloys
    http://www.kineticdiecasting.com/casting_aluminum.html

    QUANTITIES: How Many Die Casting Parts Each Order
    We will produce fewer than 100 parts.
    As many a 10,000 parts per delivery.
    No more than 250,000 parts per year.

    DIE CASTING TOOLING: We Make Die Casting Tooling
    KDC makes die casting tooling for our customers inexpensively so that when they need a few die casting parts, we can make those parts for them.

    Send us a RFQ (Request for Die Casting Quote)
    http://www.kineticdiecasting.com/replyform.html

    Kinetic Die Casting, Inc.
    6918 Beck Avenue, Aluminum
    North Hollywood, CA 91605

    Toll Free: (800) 524-8083
    Local: (818) 982-9200
    Fax: (818) 982-0877
    Sales@kineticdc.com

    Look at our Die Casting Blog for information every day

    KDC LOGO

    Kinetic Die Casting is located in North Hollywood,California. KDC specializes in manufacturing zinc and aluminum alloy casting parts. If you would like a quote, please visit our website:Kinetic Die Casting Company

    Posted in Die Casting Parts, Diecasting Process, newsletter | Tagged , , , | 1 Comment