(1) Diamond pen dressing grinding wheel: According to the size of diamond particles and their distribution in the pen, diamond pens can be divided into several types, such as chain and powder. The alloy with strong bonding force is used as the bonding agent, so the diamond grinding wheel particles are not easy to fall off during use, so there is no need to repair the grinding process.
(2) Grinding wheel dressing by rolling method: Diamond grinding wheel dressing by rolling method. Grinding wheel drives the rolling wheel at the speed of 1~2m/s by reducing the speed
Made of, carbide or abrasive) rotary. The pressure of rolling wheel applied to grinding wheel is about 3~5MPa, grinding the surface of diamond grinding wheel
Make the abrasive particles fall off. The grinding wheel dressing by rolling method has better cutting performance and lower cost, but the surface roughness of the grinding part is rougher and rolling
Damage, short life, easy loss of precision. Therefore, this dressing method is mainly used for forming grinding with small batch size and low precision.
Green silicon carbide or ceramic white corundum is used for dressing. Dressing ring is the first choice for dressing diamond grinding wheel or CBN grinding wheel. It is sharp in dressing, not easy to remove sand and has high dressing efficiency. Wheel Dresser,Dressing Tools,Dressing Roller,Grinding Wheel Dresser Henan Jinlun Superhard Material Co., Ltd , https://www.jinlunsuperhard.com
Over the past decade, China's renewable energy sector has seen remarkable growth, but this progress has come with significant financial challenges. Initially, the renewable energy price surcharge on electricity was set at just 2% in 2006, but it has since increased to 8% per kWh. This steep rise has been necessary due to the growing gap between the funds required to support renewable energy projects and the actual revenue generated. According to incomplete data, in 2009, the shortfall for renewable energy subsidies was approximately 1.3 billion yuan. By 2010, this gap widened to 2 billion yuan, and by 2011, it had ballooned to over 10 billion yuan. As of today, the total unfulfilled new energy subsidy stands at an estimated 134.3 billion yuan. In 2012 alone, the funding gap for photovoltaic (PV) subsidies was projected to reach between 5 to 6 billion yuan. Even without accounting for biomass power generation subsidies, the overall new energy subsidy deficit in the country remains staggering.
This 10-billion-yuan gap has placed an additional burden on ordinary consumers, who have been paying higher electricity tariffs to cover these costs. This fee, introduced in 2006, was initially set at 2 cents per kilowatt-hour but was raised to 4% in November 2009. As early as 2009, regulatory bodies recognized that these surcharges were insufficient to meet the needs of renewable energy companies. Some firms began experiencing severe delays in receiving their subsidies, with even large state-owned enterprises struggling to stay afloat. To address this issue, the government attempted to allocate funds from future electricity price hikes to cover previous deficits. At the same time, officials were considering further increases in the surcharge rates. Currently, multiple government departments are working to compile a comprehensive list of eligible subsidy recipients. Estimates suggest that billions of yuan remain unallocated. Despite these efforts, details about the scale of these shortfalls remain largely undisclosed to the public. For seven consecutive years, residents have contributed to this fund without full transparency.
The rapid expansion of China's renewable energy sector has far exceeded initial projections. While subsidies for new energy projects have grown, so too have the gaps in funding. When the renewable energy surcharges were raised in 2008, 2009, and 2011, policymakers anticipated manageable increases. Yet, the gaps persist and continue to widen annually.
In recent years, China has implemented various incentives to boost renewable energy investment, including tax breaks, price reductions, and direct subsidies. Since 2006, both state-owned and private enterprises have flooded into the wind power market, driven by the allure of lucrative contracts. However, many successful bidders have failed to turn a profit, leading to abandoned projects. In certain regions, wind power installations focus solely on capacity rather than actual grid-connected electricity generation. Officials from the National Energy Administration admit, "It’s growing faster than we can manage. We’ve surpassed our expectations."
The push for renewable energy investment has extended to other sectors like photovoltaics and biomass energy. These industries, once overlooked, have emerged as key players. Back then, project approval authority rested with local governments, while subsidy allocations remained centralized. This dynamic created tension: local authorities sought to boost their GDP by attracting new energy projects, but the central government bore the financial burden. "Local governments want to grow their economies, but where will the money come from?" one official lamented.
As China continues its transition toward sustainable energy, balancing growth with fiscal responsibility remains a formidable challenge.