机械制造类技术技能人才培养过程中存在校企融合度低,人才培养与市场实际需求脱节,人才适应性不高,专业教师能力发展受限等问题.因此,需要建设并用好校内生产性实训基地,形成共生发展校企命运共同体,通过深度产教融合,创新人才培养模式,多元协同共建共享教学资源,打造跨界融合师资队伍.人才培养过程中应坚持产品导向与实战实训,才能保障人才培养质量.

Objective of this study is to find a way to control the generation of bright pitting defects on the surface of hot-rolled galvalume steel sheets produced using the United States Corp method.In our study, Scanning Electron Microscope (SEM) and Energy Disperse Spectroscopy (EDS) were used to analyze the microscopic characteristics and components of the said defects, and it's found that the cause of Type-I pitting defects is the dross residuals in the zinc kettle that are adhered to the surface of the strip steel caused by improper setting of the air-knife blowing process; and the cause of Type-Ⅱ pitting defects is the suspended particles or intermediate alloy particles entering the coating layer from the zinc kettle.Methods such as strictly controlling the compositions of aluminum-zinc ingots, adjusting the parameters of the air knife during the production process, regularly picking up bottom dross and irregularly picking up surface dross remaining in the equipment, and regularly cleaning the equipment could be taken to tighten the monitoring and management of dross in the kettle, ensure the purity of the plating solution, and effectively solve the bright pitting defects.This study provides a guidance for steel sheet manufactures to improve their manufacturing techniques and control the production process.

In accordance with the requirements of hot-rolled aluminum-zinc plating and cold-rolled aluminum-zinc plating mixed line for producing construction steel and the production process characteristics of hot-dip aluminum-zinc products, the critical process control points are put forward by combining theoretical analysis with experimental verification. We should select proper raw materials, ensure the cleanliness of strip steel surface, strictly control the annealing temperature, the temperature of the strip steel entering the zinc pan, the temperature and composition of the plating bath, and explore reasonable and feasible process parameters such as air knife and cooling after plating, so as to produce qualified products. This study is of great significance for the improvement and process control of hot-rolled aluminum-zinc plating plates in steel plate production enterprises.

成都工业职业技术学院积极响应高等职业教育创新发展行动计划号召，搭建起创新产业职业教育合作平台，形成了人才共育机制，引进国家高新技术企业，校企合作共建面向市场、独立核算的精密制造校内生产性实训基地。该基地集生产、实践教学、技术培训、技能鉴定、新产品研发与试制于一体的，权责明晰。其校企共建共管、共享共赢的模式将为职业学校生产性实训基地的建设与运行提供可借鉴的经验。

提升教师、教材、教法“三教”改革质量，是实现职业教育由规模教育到质量教育的重要依据，成为职业教育人才培养质量提升的关键点。本文以《工业机器人操作与编程》课程为例，以教学技能大赛为抓手，研究教师队伍的建设，教师能力提升途径；教材内容选取，教学资源生态建设；教学方法的创新，推动传统课堂改革。

《机械设计基础》是机械类所有专业的重要专业技术基础课程.为了在机械制造专业群《机械设计基础》课程中实施有效的德育渗透,将思想政治教育融入课程教学全过程,实现全程育人、全方位育人.根据课程特点和教学内容,从五个教学模块论述如何在教学过程中开展课程思政教育. 在获取专业知识的同时帮助学生树立正确的世界观、人生观、价值观,培养学生的工匠精神和职业道德意识.

According to the mathematical properties of the logarithmic spiral, a novel structure design of disc refiner plate was introduced. The material to be refined moved in the refining zone proceed with a logarithmic spiral regularity, which was exploited by this structure. Stable bar inclination angle and bar crossing angle was still provided. Theoretically, the particular plate was beneifcial to material lfowing, disk vibration reducing and energy saving, to guarantee the stability of pulp quality.

Analyzed the forces acting on the pulp in the refining zone of a high-consistency conical pulp refiner. A hydromechanics model for which presenting the flow of pulp along the plate has been derived through the calculation of the forces, which was composed two parts, since flat refining zone and conical refining zone formed the conical refiner.

Different disc gaps of conical refiner have dramatic influence on refining temperature,spe-cific energy consumption and pulp quality.By trails we learned that there is an optimum disc gap for refining performance.

A new segment innovation for mechanical pulp refiner,which optimising the defibration zone with circular pins at the inlet of the refiner,makes it possible to increase the residence time,and milder defibration thus the resulting pulp contains longer and stronger fibers,which lead to better final pulp.Even if the energy consumption is increased in the refining operation,the improved strength potential of the mechanical pulp might be paid in savings from the papermaking operation by furnish optimization for certain grades of paper.

In this paper,a novel structure and manufacture method of a new type of disc refiner plate are introduced.The bars of the plate are arranged in a given rule,which is beneficial to pulp flowing and plate manufacting.

A mechanical model for a conical pulp-refiner present- ing the flow of pulp along the plate in a high consistency refiner has been derived through a calculation of the forces acting on the pulp. There are two parts of forces acting on the pulp, ones from the re- finer plate and ones among fibers. So, this model was comproed of this two main parts. Where, flate refining zone and conical refining zone was analysed respectively for simplify the first part, as the conical refiner plate was made up of flare part and conical part.

The structure and manufacturing of a novel disc refiner plate was introduced. Bars are arranged in a given rule, all bars and grooves are with the same length in a manufacturing cell, which is beneficial to material flowing and plate manufacturing. A plate is composed of two parts, basic plate and bars. After the completion of processing, bars are fixed by low melting point alloy. Unworn bars still can be used for new segment with post forming, which causes reduction of material losses.

A dynamic model for a conical pulp-refiner presenting the flow of pulp along the plate in a high consistency refiner has been derive d through a calculation of the forces acting on the pulp. There are two parts of forces acting on the pulp, ones from the refiner plate and ones among fibers.

We have focused significant efforts on developing solutions for reducing energy consumption in the production of refiner mechanical pulp. One successful approach to energy reduction is to find an appropriate refiner plate. This paper introduces the development of such a plate innovation for high-consistency thermomechanical pulp refiners, considering both theoretical issues and demonstration trials. The flow field in a refiner is very complex, due to the fact that it involves multiphase, non-Newtonian fluid flow, and inside the refiner the main flow medium is pulp and steam. Hydrodynamics theory was adopted to solve this complex problem. To minimize fiber residence time in the inlet zone of the refiner, the optimal geometry here resembles that of a centrifugal turbine fan, which reduces the amount of energy wasted in turbulence in this area of the refiner. To design the geometry of refiner plate, and determine their effect on the flow field, the theory of impeller pumps was used. Various commercial numerical software products were used for simulation and analyses. The theoretical approach was another aspect for the newly designed plate. Through trials, measured and calculated temperature distributions of refiner plate correlated favorably. It was also observed that the energy consumption of the refiner with the newly designed plate was clearly reduced compared with traditional plates, and the pulp still fulfilled the quality requirements.

The effects on fiber structure, like fiber wall thickness, fiber longitudinal split and fiber length by using different refiner plate pat- tern and rotary speed in the primary stage were studied. The result indicated that changing the refiner plate pattern can control the resi- dence time of pulp and improve fiber structure. Higher refining inten- sity by raised speed or more aggressive plate pattern gave more col- lapsible fibers with longitudinal splits in the fiber wall but even shorter fibers. Increasing thermal softening would preserve fiber length and at the same time obtain a lot of thin-walled fibers with split fiber walls. Energy savings can be more efficient by using high intensity refiner plates.

A novel triple-cone double-flow conical refiner with the similar mechanism as the double-flow double-disc refiner and having the optimized bars,which improves the refining force and prolongs the service life is introduced.This refiner is proved low-energy consumption,high efficiency,homogenous refining,less fiber cutting and particularly suitable for short fibers refining.

In this paper, a novel refining consistency control method of a high consistency conical disc refiner is introduced. The proposed method can improve pulp quality at high production rate of the conical disc refiner. The optimum outlet pulp consistency is controlled by controlling the dilution water flow in the refining zone. With increasing consistency in the inner region of the refining zone, the pulp residence time increases and refining intensity decreases, the plate plugging caused by excessive consistency in the outer region of the refining zone is avoided.

In this paper,a novel triple-cone double-flow conical refiner is introduced,by which we wish to have something good for the pulping paper.This paper analyses and studies the frame,performance,stock flow property and such aspect.This refiner is proved low-energy consumption,high efficiency,homogenous treatment,long fiber reservation,improved paper characteristics by trials,and which still performes well for all kinds of pulp.