1, mold hardness: soft mode, hard mold

1) Soft mode: The mold steel has been predefined, no quenching, but the hardness is low, HB is 400 or less, and the production life is more than 500,000, widely used.

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2) Hard mold: mold steel is annealing, processing is divided into two coarse processes and finishing, and then quenching after coarse processing, the hardness is above HRC48 °, and it is necessary to retain about 0.2 to the rough processing, due to quenching After that, the workpiece will deformed, and the workpiece requirements are not reached. Production life is 50-3 million times, and the small mold application is mostly used.

Third, the mold quality level: first-class secondary level four levels

First-level mold quality

1. Mold: Must be able to have one million or more molding times.

This is the first-level mold, customer requirements must be made with the best materials and accessories

The best mold.

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

(1) Detailed mold design (continuous computer map and material);

(2) The hardness of the mold has a minimum of HB280;

(3) Model must minimize HRC50, all lines and accessories, etc.

(4) To be a tube needle needle;

(5) The position must have a wear-resistant sheet;

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(6) Temperature control monitors must be feasible, and the brother or line is installed;

(7) It is recommended to use all cooling waterways to prevent rust and easy cleaning;

(8) Split line is necessary to add position lock.

Secondary mold quality

1. Mold: There must be 500,000 or more molding times.

This is the second and advanced quality molds, must use good materials and accessories, and there is also a certain standard (dimensional accuracy) in the tolerance of the mold. This model also requires top quality.

2, the requirements for the secondary mold are as follows:

(1) It is recommended to do a detailed mold design

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(3) Modes must have a minimum of hard HRC48, all lines and accessories, etc.

(4) Temperature control monitors must be feasible, while loading, brother or line

(5) Split line necessary to add position lock

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

Three-level quality mold

1. Mold: There must be 250,000 or more molding times. This is a general mold requirement, and the production is also a medium production mold.

2, the requirements for the three-level molds are as follows:

(1) Recommendation to do mold design

(2) The hardness of the mold embryo must have HB165

(3) Model must be at least HB280

(4) Except for the three points of the above three points, other homogeneous views of selectivity

Four quality mold

1. Mold: Require about 10,000 oad times. This is a low production mold, and there is no special request, but the quality of the mold is still acceptable.

2, the requirements of the four-level mold are as follows: Mold people magazine WeChat focus, professional @@

(2) The modest may be a general copper or aluminum

(3) Film can use aluminum or use steel with customers

Fourth, the mold is difficult: A-class Class C grade D level

Level A: There are multiple lines and a complex mold such as a plurality of tards, cores and rotating cores.

B – Class: There are multiple (two ~ four) lines of jets and three to three times, and there is a mold structure such as smoke CORE.

C-Class: Simple Water Outlet Admixture Mold, with a two line, ramp, etc.

D-class: Dabukou mold, two-board mold, no line, no intestine, such as a simple mold.

V. Mold Size: Extra large medium-sized small

Extra large: mold width is more than 800mm or more mold.

Large: mold width in a mold between 600 to 800 mm (excluding 800).

Medium and medium: mold width of the mold between 350 to 600 (excluding 600).

Small: mold width of 350 or less.

(2) The hardness of the mold has a minimum of HB280;

(1) Recommendation to do mold design

(4) Except for the three points of the above three points, other homogeneous views of selectivity