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The principle and application of deep cryogenic treatment of molds.
Post-processing of molds, including grinding and electrical machining, generates localized high heat on the processed surface, which can lead to changes in the surface structure of the mold. The formation of primary martensite on the surface increases the brittleness of the mold surface and pits, reducing the mold's fatigue resistance while also decreasing its wear resistance. Excessive grinding and discharge can also lead to surface cracks.
10
2022
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01
Current status of the mold industry development
Molds, known as the "mother of industry," are processing tools that process raw materials, giving them complete configurations and precise dimensions. They are mainly used for the efficient mass production of related components in industrial products. The market size of the domestic mold industry: plastic molds account for a significant proportion of the total mold sales in the country, approximately 45%; stamping molds account for about 37%; casting molds account for about 9%; and other types of molds make up about 9%.
15
2021
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12
Methods for selecting a cold-rolled pipe core rod manufacturer
Currently, the methods commonly used to select manufacturers of cold-rolled tube core rods are mainly as follows: 1. Intuitive Judgment Method The intuitive judgment method refers to a way of selecting manufacturers of cold-rolled tube core rods through investigation, soliciting opinions, comprehensive analysis, and judgment. It is a method with strong subjectivity, mainly listening to and adopting the opinions of experienced procurement personnel or directly making judgments based on the experience of procurement staff. The quality of this method depends on whether the information about the cold-rolled tube core rod manufacturers is accurate and complete, as well as the analytical judgment ability and experience of the decision-makers. This method is simple and quick to operate but lacks scientific rigor.
17
2021
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09
How to choose a manufacturer of cold-rolled pipe core rods?
1. Check the qualifications of the cold-rolled pipe core rod manufacturer When choosing a cold-rolled pipe core rod manufacturer, you should check whether they have a business license, production permit, and relevant certifications. There are many manufacturers who have entered the market halfway and lack the necessary qualifications, supervision, and related certifications. This makes it difficult to ensure that the products and quality produced by the cold-rolled pipe core rod manufacturers meet standards. 2. Investigate the strength of the cold-rolled pipe core rod manufacturer External promotions can be falsely exaggerated, while on-site inspections serve as a "mirror" that allows us to better understand the manufacturer's scale, production processing capabilities, workshop equipment, production technology, and research and development capabilities.
16
2021
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09
What is the application range of cold-rolled pipe machines?
What is the application range of cold-rolled pipe machines?
29
2021
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07
The export volume of 304 stainless steel pipes is expected to remain at a high level. Domestic steel prices continue to decline. Prices for construction steel, cold-rolled sheets, and medium-thick plates continue to slightly decrease, while hot-rolled sheets are boosted by the rise in hot-rolled sheet futures, showing some strength in certain regions. However, the follow-up efforts are limited, and the upward momentum appears weak with few participants, making it difficult to transmit.
27
2021
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07
Many people do not understand the principle of pickling and annealing in the cold rolling process of ordinary cold-rolled pipe mills. The manufacturers of cold-rolled pipe mills mainly introduce the principle of the pickling and annealing process. Before cold rolling, there is a layer of oxide scale on the surface of the strip steel, which needs to be cleaned. This is a step in the cold rolling process - pickling, followed by rolling. Due to work hardening, the rolled strip steel needs to be annealed, and after softening, the surface grease needs to be cleaned.
06
2021
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07
A brief analysis of the profit margins in the domestic construction machinery industry.
The formulation of production plans and the management of production tasks are burdensome. Typical discrete mechanical manufacturing enterprises mainly engage in single-piece and small-batch production, where the process of products often changes. Since production is primarily organized based on orders, it is difficult to predict when orders will arrive, thus requiring a good production planning system for procurement and the production workshop. The level of automation is relatively low. In mechanical manufacturing enterprises, due to the nature of discrete processing, product quality and productivity largely depend on the skill level of workers, with automation mainly at the unit level, such as CNC machine tools and flexible manufacturing systems.
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2018
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Contact Us
Address: Xingchen Industrial Park, Hengshanqiao Town, Changzhou City, Jiangsu Province
Telephone:0519-88611708
Fax: 0519-88611508
E-mail:sainengjx@163.com
Website:www.sainengjx.com
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