Changan built hot runner mold technology standard system

Recently, Zhang Ke, vice mayor of Dongguan, went to Chang'an to carry out research activities to understand the development of the pillar industry technical standards system and the development of testing and certification. It is reported that since 2011, Chang'an has taken the opportunity of carrying out the construction of a strategic demonstration town of technical standards in Guangdong Province and vigorously promoted the development of the technical standard system for pillar industries and the development of testing and certification.

Encourage enterprises to participate in standard setting

In the course of standardization, Chang'an has strengthened its guidance on hardware and molds and electronic information industries, encouraged and guided enterprises to participate in the formulation of standards and the implementation of the "Union Standard", and actively promoted the adoption of advanced international and foreign standards by enterprises, with a view to promoting pillar industries and Emerging industry standard system.

Currently, Changan has six companies through the "good behavior of standardized enterprises" to confirm and obtain a certificate. The town participated in the "natural granite construction board" and other 23 national standards and eight industry standards for the formulation and revision. At the same time, the establishment of small and medium-sized precision molds industry technology alliance, released a "model with a guide device" and other 26 alliance standards.

According to business needs to build service system

After three years of discussion and exploration of standardized construction, Chang'an has now completed the "technical standard query service system" for the town enterprises to provide the world's 500 standard organizations published 600,000 standard bibliographic data, and 70,000 standard electronic text Free retrieval and online browsing services, hardware molds and electronic information enterprises to implement the technical standards strategy to provide the basis and guidance. At the same time, Changan is also actively preparing for the national mold product quality supervision and inspection center for enterprises to provide related testing services.

According to Luo Baihui, secretary general of International Mold Association, according to the characteristics of the mold industry and standardization of actual needs, Changan uses high technology to transform traditional industries and has successfully established the technical standard system for hot runner molds. The system collected 541 standards including product range, purchased materials, processing equipment, processing technology, measuring instruments and testing methods, and improved the overall technical level of hot runner industry in Changan.

【Extended reading】

Changan effective 3C certificate accounted for 10%

At present, Changan based on product quality, and constantly strengthen public testing and certification, the town passed CNAS (China Conformity Assessment National Accreditation Board) a total of 12 certification bodies. In the field of public certification, there were 1227 enterprises in Chang'an which made 936 pieces of ISO9000 certificate, 289 pieces of ISO14001 certificate, 72 companies made 1004 pieces of effective 3C certificate, effective 3C certificate accounted for 10% of the whole city, and the total number of three kinds of certificates ranked first in the whole city .

CNC Turning

What is CNC Turning

In CNC turning, a chuck (or specialized clamp) holds bars of material and, as they are rotated, a tool is fed to the piece to remove material to create a specific shape. A turret, which holds a group of tools, is programmed to move along the work piece in three different axes of motion to shape the material according to the assigned specifications.

Since CNC turning involves removing material from a work piece, it`s considered a [subtraction machining" process. It is done on a lathe machine, which can be used on all types of material, from wood to metal to plastic. It can also be done on a mill or a drill press.

Turning is primarily used to create cylindrical parts. It can be completed on the outside or the inside of a work piece, which is known as boring. The process can also be used to conduct various other operations, including:

· Grooving: Cuts grooves or creates narrow cavities in work pieces.

· Taper turning: Creates a gradually decreasing diameter in a cylindrical shape.

· Drilling: Produces round holes, which are typically for screws and bolts.

· Facing: Cuts a flat surface perpendicular to the axes of the milling cutter.

· Parting: Separates one part of the work piece from another.

· Knurling: Creates vertical, horizontal or crossing lines on the work piece.

· Threading: Makes grooves that can be screwed into other objects.

CNC Turning process

l Creating a digital representation of the part in CAD

l Creating the machining code from the CAD files

l CNC lathe setup

l Manufacturing of the turned parts

Capabilities

Suitable Materials for Turning

In turning, the raw form of the material is a piece of stock from which the workpieces are cut. This stock is available in a variety of shapes such as solid cylindrical bars and hollow tubes. Custom extrusions or existing parts such as castings or forgings are also sometimes used.

Turning can be performed on a variety of materials, including most metals and plastics. Common materials that are used in turning include the following:

l Aluminum

l Brass

l Magnesium

l Nickel

l Steel

l Thermoset plastics

l Titanium

l Zinc

When selecting a material, several factors must be considered, including the cost, strength, resistance to wear, and machinability. The machinability of a material is difficult to quantify, but can be following characteristics:

l Results in a good surface finish

l Promotes long tool life

l Requires low force and power to turn

l Provides easy collection of chips

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