Injection mold factory Introduce the quality level standard of the mold

1、 Mold classification:

Classification by hardness: soft mold, hard mold (quenching treatment).

Classified by quality grade: Grade I, Grade II, Grade III, Grade IV

Classification by difficulty: Grade A, Grade B, Grade C, Grade D

Classification by mold size: extra large, medium and small

2、 Definition of hard mold and soft mold:

1. Mold hardness: soft mold, hard mold

1) Soft mold: the mold steel has been pre hardened, and no quenching is required, but the hardness is low. HB is below 400, and the production life is within 500000 times. It is widely used.

2) Hard mold: the die steel is annealed, and the processing is divided into rough machining and finish machining. After rough machining, it is quenched. The hardness is above HRC48 °. After rough machining, about 0.2 machining allowance should be reserved. Because after quenching, the workpiece will be deformed to prevent the finish machining from failing to meet the requirements of the workpiece. The production life is more than 500000~1000000 times, and small molds are widely used.

3、 Mold quality level: Level 1, Level 2, Level 3, Level 4

First class mold quality

1. Mold: It must be able to open the mold for one million times or more.

This is a first-class mold. Customers require that better materials and accessories be used to make better molds.

2. The requirements for the first level mold are as follows:

(1) Detailed mold design (including computer graphics and materials);

(2) Mold hardness shall not be less than HB280;

(3) The mold core must see hardened HRC50, and all rows and accessories must also be hardened;

(4) It is required to hold the edge in the middle and drive the thimble;

(5) The travel position must be equipped with wear plate;

(6) The temperature control monitor shall be installed in the mold, brother or line position according to the feasibility;

(7) It is recommended that all cooling channels be nickel plated to prevent rust and easy cleaning;

(8) The parting line must be equipped with a positioning lock.

Secondary mold quality

1. Mold: It must be able to open the mold for 500000 times or more.

This is a second class and high quality mold. Good materials and accessories must be used, and the tolerance of the mold also has certain standards (dimensional accuracy). This mold also requires top quality.

2. The requirements for secondary molds are as follows:

(1) It is recommended to make detailed mold design

(2) Mold hardness shall be HB280

(3) The mold core must see the hard HRC48, and all lines and accessories must also require heat treatment

(4) The temperature control monitor shall be installed in the mold, brother or line position according to the feasibility

(5) The parting line must be equipped with a positioning lock

(6) The following requirements will be determined at the time of individual requirements and quotation

Three level quality mold

1. Mold: It must be able to open the mold for 250000 times or more. This is a general mold requirement, and the production is also a medium production mold.

2. The requirements for three-level molds are as follows:

(1) It is recommended to do mold design

(2) Mold hardness shall be HB165

(3) Mold core must be HB280

(4) In addition to the above three basic requirements, others are regarded as optional additional requirements

Grade IV quality mould

1. Mold: about 10000 beers are required. This is a low production mold. Generally speaking, there is no special requirement, but the mold quality still needs to be good and accepted by customers.

2. The requirements of the fourth level mold are as follows: mold people magazine WeChat dedicated, professional@@

(1) It is recommended to do mold design

(2) The mold may be ordinary copper or aluminum

(3) Molded meat can be made of aluminum or steel agreed by customers

(4) In addition to the above three basic requirements, others are regarded as optional additional requirements

4、 Mold difficulty: Level A, Level B, Level C, Level D

Class A: complex molds with multiple row positions and multiple parting, core pulling and rotary core pulling with inclined top.

Level B: there are multiple (two to four) row positions, and the mold structure such as the second to third parting of the lifter and the drawing core is complex.

Grade C: simple fine nozzle rubber injection mold, with one or two rows, inclined roof and other molds with general structure.

Level D: large water port mold, two plate mold, mold with simple structure such as no row position, no inclined roof, etc.

5、 Mold size: extra large, medium and small

Extra large type: the mold width is more than 800mm.

Large: moulds with a width of 600~800mm (excluding 800).

Medium: the mold width is between 350 and 600 (excluding 600).

Small: the mold width is less than 350.